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1.
Impacts of 33-yr of application of S-containing and Cl-containing chemical fertilizers on rice (Oryza sativa L.) yield and its components were investigated in a red paddy field experiment, south China. The treatments included: 1) adding 302 kg SO42-S ha-1 yr-1 with application of (NH4)2SO4, K2SO4, and calcium superphosphate (SO42-); 2) adding 56 kg SO42--S and 176kg CI ha-1 yr-1 with application of urea, calcium superphosphate, and KC1 (C1-+SO42-); 3) adding 516 kg C1 ha-1 yr-1 with application of NH4C1, KC1, and KH2PO4 (Cl-). Under each treatment, the applied N, P, and K nutrients were controlled at conventional rates of 150 kg N ha1- yr-1, 75 kg P2O5 ha-1 yr-1, 225 kg K2O ha-1 yr-1, respectively. Under the S-containing fertilizer application, soil SO42--S content showed a first increasing then decreasing trend with years, and was significantly negatively correlated with annual rice yield. Average annual yield significantly declined in an order of Cl-, C1-+SO42-, and SO42-. Under the Cl- treatment, soil SO42--S content was maintained at about 26.5 mg kg-1, not showing deficiency. From 1990 to 2000, rice yield declined rapidly under the SO42- treatment, and was significantly lower than that under the C1-treatment. After then, there was no significant difference in yield among the treatments. Our results demonstrated that long-term application of S-containing fertilizer could result in excessive accumulation of SO42--S in the red paddy soils of south China, therefore producing a certain threat to rice growth. The Cl-containing fertilizer could be relatively safe.  相似文献   

2.
氮掺杂碳纳米子施用对稻田氮素径流和渗漏损失的影响   总被引：2，自引：0，他引：2  
为明确氮掺杂碳纳米粒子(N-CNPs)在田间条件下对单季稻田氮素径流和渗漏损失的影响,采用田间小区实验,对不同用量N-CNPs和双氰胺(DCD)配施尿素时稻田径流液和渗漏液中总氮(TN)、铵态氮(NH_4~+-N)和硝态氮(NO-3-N)的动态和损失总量进行研究。结果表明:与单独施用尿素(Urea)处理相比,N-CNPs配施尿素能降低稻田径流NH_4~+-N浓度和渗漏液中NO-3-N浓度;基肥后第1次自然降雨产流时,15‰N-CNPs处理径流液中NH_4~+-N浓度较Urea处理降低30.33%,基肥后第7 d渗漏液中NO-3-N浓度较Urea处理降低了27.22%。在水稻全生育期内,15‰N-CNPs处理径流总氮损失量为8.15 kg·hm~(-2),占该处理总施氮量的4.08%,较Urea处理减少2.04 kg·hm~(-2),降幅达到20.02%;TN渗漏总量为16.59 kg·hm~(-2),占施氮总量的8.30%,较Urea处理减少8.83 kg·hm~(-2),降幅达到34.73%,其径流和渗漏TN损失量较5%DCD处理分别降低5.67%和15.70%。研究表明,尿素配施N-CNPs能显著减少稻田氮素径流和渗漏损失,达到提高氮肥利用效率、控制农田非点源污染范围和强度的目的。  相似文献   

3.
Nitrogen （N） application before transplanting, where N fertilizers are applied in seedling-bed and carried to the paddy field with seedlings, is a novel method proposed in this article aiming for improving nitrogen utilization efficiency （NUE） in rice. The effect of this method on mineral N distribution in the rhizosphere soil was investigated in a field experiment with a japonica variety, Ningjing 2, in seasons of 2004 and 2005. There were four levels of N applied 16 h before transplanting： zero N （NO）, 207 kg ha^-1 （NL）, 310.5 kg ha^-1 （NM）, and 414 kg ha^-1 （NH）. The result indicated that N fertilizer before transplantation had positive effect of increasing mineral N content in the rhizosphere soil of rice. Generally, N content in the rhizosphere soil of rice tended to increase with the amount of N fertilizer before transplanting, with the NH treatment having the largest effect. Additionally, N fertilizer before transplanting had significant influence on rice NUE and grain yield. Compared with other treatments, the NM treatment showed the largest influence, with basal-tillering NUE, total NUE, and grain yield being 15%, 12%, and 529.5 kg ha^-1 higher than those of NO treatment. This result indicated that N fertilizer before transplantation had positive effect on mineral N distribution in the rhizosphere soil of rice, thus improving NUE and grain yield.  相似文献   

4.
江苏南部地区稻麦两熟土壤中尿素的氨挥发损失   总被引：34，自引：1，他引：34  
采用连续气流密闭室法研究了江苏南部丘陵地区稻麦两熟农田施用尿素后的氨挥发损失及其年际变化。结果表明,不同年份间麦田的氨挥发量（Ｎ）占施氮量的比例变化在４．０７％～１４．８％之间。尿素作不稻基肥地,氨挥发量为１．７７％～５．５７％,分蘖期为１０．７％～１６％,而孕穗期为５．３％～８．６％。无论是麦田还是稻田,施用尿素后,年际间氨挥发量相差显著。高温、长日照和低降雨量促进氨挥发。土壤水分含量对麦田的尿素氨挥发的作用可能大于温度对它的影响。稻田高郁闭度和尿素混入土壤均有明显减少氨挥发。  相似文献   

5.
沼液在稻田的精确施用及其环境效应研究   总被引：7，自引：6，他引：1  
为探究沼液在稻田中的适宜用量,通过田间试验,研究不同氮素水平的沼液(0、90、157.5、225、292.5、562.5 kg·hm~(-2))对水稻产量、氮素利用率、田面水无机氮动态变化、土壤残留无机氮以及稻田氨挥发的影响。结果表明,水稻籽粒产量随沼液氮素施用量的变化符合线性加平台模型,沼液在水稻种植中的最佳氮素施用量为213.9 kg·hm~(-2);施用沼液显著增加了田面水铵态氮浓度,施用沼液3 d后,田面水铵态氮浓度迅速降低,而田面水硝态氮初始浓度无明显变化;稻田氨挥发总量随沼液氮素施用量的增加而显著增加,且主要集中在沼液施用后的一周内,氨挥发所引起的氮素损失占沼液氮素量的14.52%~17.64%;等氮量施用的沼液和化肥相比,水稻产量、氮素利用率、氮素农学生产率和土壤残留无机氮均无显著差异,而单位稻谷产量的氨挥发量显著降低22.6%。由此可见,稻田合理施用沼液具有较好的经济效益和环境效益。  相似文献   

6.
The nitrogen loss pathway in winter wheat and summer maize rotation system was studied based on field experimental data. The results showed that nitrogen recovery rate was significantly decreased with nitrogen fertilization rate increased, while residual rate and losses rate had an increasing trend. Accumulated ammonia volatilization loss in winter wheat and summer maize rotation was 12. 8(N0), 22. 0(N120), 33. 0(N240) and 64. 5 kg N ha-1(N360) respectively and rate of ammonia volatilization loss was 3.8, 4.2 and 7. 2 % respectively while urea was mixed with 0 - 10 cm soil or spread before irrigation. Denitrification loss with acetylene-soil core incubation method in winter wheat was lower than 1 kg N ha-1 and rate of denitrification loss was 0. 21 - 0. 26% or trace. Denitrification loss in summer maize was 1 - 14 kg N ha-1 and rate of denitrification loss was 1 - 5 %. The total gaseous loss in winter wheat and summer maize rotation system was less than 10 %, and the main nitrogen fertilizer loss way was leaching below 0 - 100 cm soil profile and accumulated in deeper soil.  相似文献   

7.
采用密闭室法测定长期不同施肥制度下双季稻田氨挥发速率及其影响因素,并分析双季稻田氨挥发与产量的关系。结果表明:节肥型有机无机结合农业施肥处理(JF处理)的水稻产量与全肥型有机无机结合农业施肥处理(OM处理)和单施无机肥(NPK处理)的差异不显著,显著高于单施化学氮钾肥(NK处理)的产量;双季稻氮素农学利用率(NUEA)以JF处理的最高,早稻和晚稻分别为17.4和8.9 kg.kg-1,显著高于NK处理;双季稻氨挥发累积量以OM处理最高(86.2 kg.hm-2),NK处理次之(78.2 kg.hm-2),显著高于JF处理(60.7 kg.hm-2);氨挥发速率主要受田面水NH4+-N质量浓度的影响。由于气温和降雨的影响,施早稻分蘖肥后氨挥发速率显著高于施基肥后的,而施晚稻基肥和分蘖肥后的没有差异。因此,JF处理在稳定产量的基础上,能够减少氨挥发量,并且提高了土壤中有机质和全氮含量。  相似文献   

8.
中国稻田CH_4和N_2O排放及减排整合分析   总被引：7，自引：1，他引：7  
【目的】对中国有关稻田CH4和N2O排放试验结果进行整合分析,估算不同管理措施的减排潜力,为稻田CH4和N2O减排提供参考依据。【方法】通过建立中国稻田CH4和N2O排放的数据库,研究稻田CH4和N2O的排放特征,分析作用显著的影响因素,比较不同措施的减排效果。【结果】中国稻田CH4排放存在明显的地域性分布规律,主要表现为西南地区稻田CH4排放远高于其它地区。水稻生长季节水分管理方式、非水稻生长季水分状态、化肥氮投入量和有机物料对稻田CH4排放具有重要影响(P0.05)。与淹水灌溉(CF)相比,前期淹水-中期晒田-淹水(F-D-F)、前期淹水-中期晒田-淹水-湿润灌溉(F-D-F-M)和间歇灌溉或完全湿润(M)降低稻田CH4排放的幅度分别为45%、59%和83%。与休闲期淹水(F)相比,采取冬闲期排干(SD)、稻旱轮作(LD)或旱-旱-稻轮作模式(TD),能降低稻田CH4排放42%—56%。不同有机添加物产生CH4的能力的顺序为:作物秸秆+厩肥(S+FM)绿肥(GM)厩肥(FM)作物秸秆(S)堆肥或沼渣(CM)。化学氮肥的种类对CH4排放有一定的影响,但特征不明显,而随着氮肥用量(N)的增加,CH4排放逐渐降低。当0N≤150kgN·hm-2,150N250kgN·hm-2和≥250kgN·hm-2时,CH4排放较不施任何肥料降低12%、29%和65%。中国稻田N2O排放的地域性分布特征不明显。水稻生长季节水分管理方式、非水稻生长季水分状态和总氮投入量是影响N2O排放的最重要的因素(P0.05)。与CF相比,F-D-F、F-D-F-M和M能够提高稻田N2O排放12%、140%和478%,而且在F-D-F、F-D-F-M模式下的氮肥N2O排放因子分别为0.43%和0.68%。不同非水稻生长季水分状态模式下N2O排放平均值表明,SD、LD和TD比F增加40%—110%的排放。【结论】稻田CH4和N2O排放的消长关系表现在水分管理、非水稻生长季节的水分状态和氮素的投入量等方面。合理的减排措施应基于二者的综合考虑。通过优化稻田水肥管理措施可降低稻田CH4和N2O排放的温室效应。  相似文献   

9.
A field experiment was conducted to investigate the variations in denitrification losses and N2O emissions from 4 different types of nitrogen fertilizers (urea, ammonium nitrate, ammonium bicarbonate, and calcium nitrate) applied to the maizefluvo-aquic soil system in the North China Plain by the method of intact soil core incubation and acetylene inhibition, and the responses of nitrogen fertilizers to maize grain yields. Results show that the denitrification loss from different nitrogen fertilizers ranged from 0.38-1.20 kg N ha-1, with no significant differences among different fertilizer treatments, and the N2O emission from 0.05-0.95 kg N ha-1, with a significant difference (P＜0.05) among the treatments. The highest emission was from the treatment of ammonium nitrate, while the lowest from calcium nitrate. The nitrogen fertilizers increased the maize grain yield by 9.7-19.8% compared to control. But there were no significant differences in yield increase among the 4 types of nitrogen fertilizers. In comparison, urea had the best effect, whereas calcium nitrate had the least effect on increasing maize yield. The maize yield was 5.7% higher when urea was separately applied at 2 times than when it was applied at a time. In this case, however, the denitrification loss and the N2O emission were also increased by 4.05 and 1.84 kg N ha-1,respectively.  相似文献   

10.
一次性施肥稻田田面水氮素变化特征和流失风险评估   总被引：8，自引：2，他引：6  
为评估单季稻一次性施肥模式中氮素径流损失风险,通过田间试验研究了一次性施肥模式中缓释氮肥类型、施用比例和氮肥施用量对田面水氮素含量的影响。结果表明:与尿素分次施肥处理(225 kg N·hm-2)相比,不同缓释氮肥(180 kg N·hm-2)一次性施肥后田面水铵态氮浓度为稳定性肥料(NIU)常规分次施肥(Urea)树脂包膜尿素(RCU)聚氨酯包膜尿素(PCU);氮肥施用量为180 kg N·hm-2时田面水铵态氮浓度随缓释氮肥施用比例增加而下降,但180 kg N·hm-2和144 kg N·hm-2处理间田面水铵态氮含量没有明显差异。尿素分次施肥和一次性施肥处理的稻田氮素径流损失风险都在施基肥后5 d。研究表明,一次性施肥模式通过缓释氮肥的应用和氮肥减量等措施,虽然基肥用量大于尿素分次施肥处理,但没有增加稻田氮素径流损失风险。  相似文献   

11.
[目的]研究不同施氮量对稻田氨挥发损失的影响,为解决稻田氮素低利用率提供参考依据.[方法]利用双季稻田间试验,采用动态室法监测基肥和穗肥施用不同用量氮素后的土壤氨挥发特征及田面水氮形态含量特征.[结果]早稻基肥期土壤氨挥发损失峰值于施肥后第5d出现,第9d接近对照水平;晚稻同期及穗肥期土壤氨挥发损失峰值均于施肥后第1d出现.基肥氨挥发损失量低于穗肥,晚稻高于早稻.早、晚稻平均氨挥发损失率分别为12.99％和21.79％.施氮提高氨挥发损失量和累积损失量,且随施氮量的增加而呈现不同程度地增加.氨挥发损失率随施氮量的增加而降低.相关分析表明,氨挥发损失量和磷肥施用量均与田面水铵态氮、硝态氮和溶解性总氮含量呈显著或极显著直线正相关.[结论]施氮通过提高田面水氮含量促进稻田氨挥发损失.通过合理施肥、改变肥料特性等措施降低施肥后田面水中氮含量降低,从而减少稻田土壤氨挥发损失.  相似文献   

12.
稻田氨挥发损失及减排技术研究进展   总被引：3，自引：1，他引：2  
氨挥发是稻田氮素损失的主要途径,不仅降低了氮素利用率,还通过促进PM2.5形成和大气氮沉降造成严重的环境问题。本文通过查阅文献,分析了稻田系统氨挥发损失现状及相关影响因子,评价了国内外普遍采用的调整氮肥类型、有机废弃物资源化、添加土壤调理剂和优化水肥管理4种氮素减排措施的优劣,探讨了目前稻田氨挥发减排研究中存在的不足,为后期研究稻田氨挥发减排提供参考。  相似文献   

13.
Field experiment was carded out to nitrogen release characteristics of rice controlled release fertilizer (RCRF) coated with natural and half natural high molecular materials, and to thereof effects on the nitrogen uptake and yield of early and late hybrid rice from 1999 to 2000, with urea as control.In experimental fields regardless of early and late seasons, the amount of N in the plants increased exponentially at the early growth stage (y=ab^x) and nonlinearly at the middle and late growth stages(y=a bx cx^2).Rice controlled release fertilizer lengthened the exponential phase and increased the parameter -b/c during the nonlinear phase. Although the N amount of plants was less in rice controlled release fertilizer plots than in urea plots within 20 days after transplanting, at the heading and maturity stages, the N amount of plants in rice controlled release fertilizer plots was above two times greater than in the urea plots due to the higher N recovery, and the high absorption density of N in the nonlinear phase. Tillers pattern and achievement of the maximum filleting stage varied with fertilizer types. The maximum tillering stage in the urea plots occurred a week earlier than in the rice controlled release fertilizer plots. Yield sink size and potential sink size of the plants reflected the N absorption pattern and the amount of N in the plants. The yields of early and late rice with 90 kg N ha^-1 of rice controlled release fertilizer were respectively increased by 832.7 kg ha-1 and 412.8 kg ha-1 than those with 90 kg N ha^-1 of urea, almost equivalent to the yield of early and late hybrid rice with 180 kg N ha^-1 of urea.  相似文献   

14.
选择南方典型酸性双季稻田,采用通气法研究了不同生石灰用量对稻田氨挥发通量、田面水NH_4~+-N浓度和pH值的影响。结果表明:撒施生石灰显著影响稻田田面水NH_4~+-N浓度和pH值,生石灰用量与田面水NH_4~+-N浓度和田面水pH值之间均存在极显著正相关关系;撒施生石灰,显著增加稻田氮素氨挥发损失,早、晚稻季氨挥发损失量较不施生石灰处理分别增加2.20~22.91和3.08~52.44 kg/hm~2,增幅分别达19.28%~200.79%和6.96%~118.48%;当早、晚稻季分别施纯氮150和180 kg/hm~2时,撒施生石灰450~3 750 kg/hm~2,氨挥发损失量分别达13.61~34.32和47.34~96.70 kg/hm2,氮素损失率分别达7.44%~18.78%和21.66%~44.24%;当早、晚稻季生石灰用量分别超过900和1 800 kg/hm2时,稻田氨挥发显著增加。  相似文献   

15.
Rice-duck （RD） and rice-fish （RF） ecological systems are major complex planting and breeding models of rice paddy fields in southern China. Studying the methane （CH4） and nitrous oxide （N2O） emissions and their economic value from these two ecosystems can provide theoretical and practical basis for further development and utilization of these classical agricultural techniques. CH4 and N2O emissions from RD and RF ecological systems were measured in situ by using static chambers technique. Using global warming potentials （GWPs）, we assessed the greenhouse effect of CH4 and N2O and their economic value. Results showed that the peaks of CH4 emission fluxes from RD and RF appeared at full tillering stage and at heading stage, and the average emission fluxes were significantly （P〈 0.05） lower than that from CK. N2O fluxes remained low when the field is flooded and high after draining the water. Compared with CK, the total amount of N2O emissions was significantly （P〈0.05） higher and slightly lower than those from RD and RF, respectively. In 2006 and 2007, the total greenhouse effect of CH4 and N20 from RD and RF were 4 728.3 and 4 611 kg CO2 ha^-1, 4 545 and 4 754.3 kg CO2 ha^-1, respectively. The costs of greenhouse effect were 970.89 and 946.81 RMB yuan ha^-1, and 933.25 and 976.23 RMB yuan ha^-1, respectively, which were significant lower than those from CK （5 997.6 and 5 391.5 RMB yuan ha^-1）. Except for the environment cost of CH4 and N2O, the economic benefits from RD and RF were 2 210.64 and 4 881.92 RMB yuan ha^-1; 3 798.37 and 5 310.64 RMB yuan ha^-1, respectively, higher than those from CK. Therefore, RD and RF complex ecological planting and breeding models can effectively decrease and control CH4 and N2O emissions, and they are two of the effective strategies to reduce greenhouse gases from rice paddy fields and contribute in alleviating global warming. Thus, their adoption is important to the environment together with their economy benefits.  相似文献   

16.
The article deals with the effects of urea and controlled release nitrogen fertilizer （CRNF） on dynamics of pH, electronic conductivity （EC）, total nitrogen （TN）, NH4^＋-N and NO3 -N in floodwater, and the regulation of runoff TN loss from paddy field-based two-cropping rice in Dongting Lake, China, and probes the best fertilization management for controlling N loss. Studies were conducted through modeling alluvial sandy loamy paddy soil （ASP） and purple calcareous clayey paddy soil （PCP） using lysimeter, following the sequence of the soil profiles identified by investigating soil profile. After application of urea in paddy field-based two-cropping rice, TN and NHa＋-N concentrations in floodwater reached peak on the 1st and the 3rd day, respectively, and then decreased rapidly over time; all the floodwater NO3--N concentrations were very low; the pH of floodwater gradually rose in case of early rice within 15 d （late rice within 3 d） after application of urea, and EC remained consistent with the dynamics of NH4^＋-N. The applied CRNF, especially 70% CRNF, led to significantly lower floodwater TN and NH4^＋ concentrations, pH, and EC values compared with urea within 15 d after application. The monitoring result for N loss due to natural rainfall runoff indicated that the amount of TN lost in runoff from paddy field- based two-cropping rice with urea application in Dongting Lake area was 7.47 kg ha^-1, which accounted for 2.49% of urea- N applied, and that with CRNF and 70% CRNF application decreased 24.5 and 27.2% compared with urea application, respectively. The two runoff events, which occurred within 20 d after application, contributed significantly to TN loss from paddy field. TN loss due to the two runoffs in urea, CRNF, and 70% CRNF treatments accounted for 72, 70, and 58% of the total TN loss due to runoff over the whole rice growth season, respectively. And the TN loss in these two CRNF treatments due to the first run-off event at the 10th day after application to early rice decreased 44.9 and 44.2% compared with urea, respectively. In conclusion, the 15-d period after application of urea was the critical time during which N loss occurred due to high floodwater N concentrations. But CRNF decreased N concentrations greatly in floodwater and runoff water during this period. As a result, it obviously reduced TN loss in runoff over the whole rice growth season.  相似文献   

17.
【目的】通过比较研究洞庭湖区双季稻田施用尿素（CF）和控释氮肥（CRNF）的表层水pH、电导率（EC）、总氮（TN）、NH4+-N和NO3--N浓度变化动态及TN径流损失规律，寻找有效控制氮素流失的最佳施肥管理措施。【方法】在渗漏池中按河沙泥（ASP）和紫潮泥（PCP）土壤的剖面层次填装土壤，对天然降雨引起的稻田氮素径流损失进行模拟试验。【结果】稻田土壤施用尿素后，表层水TN、NH4+浓度分别在第1、3天达到高峰，然后随着时间的延长而迅速下降；早稻表层水pH在施用尿素后15 d内（晚稻3 d）逐渐升高，EC表现与NH4+的变化同步。与施用尿素相比，施用CRNF能显著降低稻田表层水TN、NH4+浓度峰值，pH、EC峰值也有明显下降。氮素径流损失监测结果显示，洞庭湖区双季稻田施用尿素TN径流损失量为7.47 kg•ha-1，占施氮量的2.49%；施用CRNF、70%CRNF的TN损失量比施用CF的分别减少了24.5%和27.2%。早稻施肥后20 d内发生的2次降雨径流事件，施用尿素、CRNF和70%CRNF处理的2次TN径流损失量分别占全生育期径流损失总量的72%、70%和58%。其中，早稻施肥后第10天发生的第1次径流的2个控释肥处理的TN损失比施用尿素分别降低了42.9%和44.2%。【结论】双季稻田施用尿素后15 d内表层水氮素浓度高，是氮素流失的关键时期；控释氮肥能显著降低这个时期的表层水和所发生的径流液中的氮素浓度，从而显著削减水稻全生育期内的TN径流损失量。  相似文献   

18.
The application of nitrogen(N) fertilizer to increase crop yields has a significant influence on soil methane(CH_4) and nitrous oxide(N_2O) emission/uptake.A meta-analysis was carried out on the effect of N application on(i) CH_4 emissions in rice paddies,(ii) CH_4 uptake in upland fields and(iii) N_2O emissions.The responses of CH_4 emissions to N application in rice paddies were highly variable and overall no effects were found.CH_4 emissions were stimulated at low N application rates(100 kg N ha~(-1)) but inhibited at high N rates(200 kg N ha~(-1)) as compared to no N fertilizer(control).The response of CH_4 uptake to N application in upland fields was 15%lower than control,with a mean CH_4 uptake factor of-0.001 kg CH_4-C kg~(-1) N.The mean N_2O emission factors were 1.00 and 0.94%for maize(Zea mays) and wheat(Triticum aestivum),respectively,but significantly lower for the rice(Oryza sativa)(0.51%).Compared with controls,N addition overall increased global warming potential of CH_4 and N_2O emissions by 78%.Our result revealed that response of CH_4 emission to N input might depend on the CH_4concentration in rice paddy.The critical factors that affected CH_4 uptake and N_2O emission were N fertilizer application rate and the controls of CH_4 uptake and N_2O emission.The influences of application times,cropping systems and measurement frequency should all be considered when assessing CH_4 and N_2O emissions/uptake induced by N fertilizer.  相似文献   

19.
稻田肥水管理对氮肥效益的影响   总被引：3，自引：2，他引：3  
本文在阐明水稻氮需求、氮效应、稻田氮肥施用技术,及水分管理对氮肥效应的影响的基础上,提出了水稻氮肥施用应在适宜氮肥施用量的范围内,采取控前攻中施肥法,与水分管理结合,以水带肥,提高稻田氮肥效益。  相似文献   

20.
韩鹏飞  郭敏 《安徽农业科学》2009,37(17):8153-8155
稻田CH4和N2O的排放受水分、温度、施肥情况、有机质含量、pH值、氧化还原电位（Eh）等诸多环境环境因素的影响,而水分和肥料是稻田温室气体排放的2大驱动因子。综述了不同肥料施用对稻田CH4和NO排放的影响,并提出了相应的温室气体减排措施。  相似文献   

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