| 种植草本植物狗牙根改良滨海黏性盐碱地的研究 |
| |
| 引用本文： | 邵天韵,燕潇,贾秉志,徐聆溪,马占红,任莹飞,隆小华.种植草本植物狗牙根改良滨海黏性盐碱地的研究[J].土壤,2023,55(4):764-770. |
| |
| 作者姓名： | 邵天韵 燕潇 贾秉志 徐聆溪 马占红 任莹飞 隆小华 |
| |
| 作者单位： | 宁夏农垦农林牧技术推广服务中心, 银川 750021;宁夏农林科学院固原分院, 宁夏固原 756000;江苏开放大学环境生态学院, 江苏镇江 214257;宁夏大学农学院, 银川 750021;宁夏回族自治区国土资源调查监测院, 银川 750021 |
| |
| 基金项目： | 宁夏回族自治区农业科技自主创新资金项目（NGSB-2021-16-05）资助。 |
| |
| 摘 要： | 为探明不同轮作模式对宁夏南部山区旱地农田土壤肥力和谷子产量的影响，基于连续8年定位试验，研究了谷子连作（R0）、谷子–小麦–糜子轮作（R1）、谷子–胡麻–豌豆轮作（R2）和谷子–豌豆–马铃薯轮作（R3）处理对谷子产量及土壤物理和化学性质的影响。结果表明：经过两个轮作周期后，与R0处理相比，R2处理谷子产量增加13.10%，R1处理产量略有降低，R3处理产量显著降低（P<0.05）。各轮作模式均有利于降低土壤容重，提高土壤田间持水量，并且R1和R2处理土壤容重显著低于R0处理；除R3处理外，R1和R2处理有利于增加土壤孔隙度，与R0处理相比增幅分别为15.09%和21.18%。各轮作模式均有利于增加土壤>0.25 mm大团聚体总量，其中R1和R2处理可以显著降低土壤中<0.25 mm和2~0.25 mm团聚体数量（P<0.05），并显著增加>2 mm团聚体比例。各轮作模式土壤有机质含量均高于R0处理，土壤全量养分含量差异不明显；各轮作模式均有利于增加土壤微生物生物量碳、氮和有效磷含量，同时R2处理还有利于增加土壤碱解氮、速效钾和微生物生物量磷含量。综上，轮作有利于旱地土壤有机质积累，降低土壤容重，增加大团聚体数量，提高土壤微生物生物量，但不同轮作模式间存在差异，其中，R2处理更有利于增加谷子产量、改善土壤结构、培肥土壤，可以作为宁夏南部山区雨养农业旱作区的优选作物轮作模式进行推广。
|
| 关 键 词： | 轮作模式 土壤容重 土壤团聚体 土壤化学性质 |
| 收稿时间： | 2022/9/24 0:00:00 |
| 修稿时间： | 2022/10/1 0:00:00 |
Cultivation of Herbaceous Plants (Cynodon dactylon) is Helpful to Improve Soil Quality of Clayey Coastal Saline-Alkali Land |
| |
| SHAO Tianyun,YAN Xiao,JIA Bingzhi,XU LingXi,MA Zhanhong,REN Yingfei,LONG Xiaohua.Cultivation of Herbaceous Plants (Cynodon dactylon) is Helpful to Improve Soil Quality of Clayey Coastal Saline-Alkali Land[J].Soils,2023,55(4):764-770. |
| |
| Authors: | SHAO Tianyun YAN Xiao JIA Bingzhi XU LingXi MA Zhanhong REN Yingfei LONG Xiaohua |
| |
| Institution: | Agricultural Technology Extension and Service Center of Ningxia Agricultural Reclamation, Yingchuan 750021, China;Guyuan Branch of Ningxia Academy of Agricultural and Forestry Sciences, Guyuan, Ningxia 756000, China;College of Environmental Ecology, Jiangsu Open University, Zhenjiang, Jiangsu 214257, China;College of Agriculture, Ningxia University, Yinchuan 750021, China; Ningxia Survey and Monitor Institute of Land and Resources, Yinchuan 750021, China |
| |
| Abstract: | In order to reveal the effects of rotation patterns on soil fertility and foxtail millet production in dry-farming area of southern Ningxia, a field experiment was carried out from 2011 to 2018, in which three rotation patterns were set up:foxtail millet-wheat-common millet rotation (R1), foxtail millet-flax-pea rotation (R2) and foxtail millet-pea-potato rotation (R3), with foxtail continuous cropping (R0) as the control. Foxtail millet yields and soil physiochemical properties were investigated. The results showed that compared with R0, R2 increased the yield by 13.10%, R1 slightly decreased the yield, and R3 significantly decreased the yield (P<0.05). All rotation patterns were beneficial to reduce soil bulk density and increase soil field water capacity. Compared to R0, R1 and R2 significantly decreased soil bulk density; and except R3, R1 and R2 increased soil porosity by 15.09% and 21.18%, respectively. All rotation patterns were beneficial to increase the number of soil macroaggregates (>0.25 mm), R1 and R2 significantly decreased the number of <0.25 mm and 2~0.25 mm aggregates, while increased significantly the ratio of >2 mm aggregates. Soil organic matter content was higher under all rotation modes than R0, but soil total nutrient content had no significant difference. All rotation patterns were beneficial to increase the contents of soil microbial biomass C, N and available P, and R2 was also beneficial to increase the contents of soil alkali-hydrolyzable N, available K and microbial biomass P. In conclusion, rotation is beneficial to soil organic matter accumulation, which can reduce soil bulk density, increase the number of large aggregates and soil microbial biomass, but there are differences among different rotation modes. The foxtail millet-flax-pea rotation (R2) is more beneficial to increase foxtail millet yield and improve soil structure and cultivate soil.It can be promoted as an optimal crop rotation model for rainfed agriculture in the southern mountainous areas of Ningxia. |
| |
| Keywords: | Cropping rotation pattern Soil bulk density Soil aggregates Soil chemical properties |
|
| 点击此处可从《土壤》浏览原始摘要信息 |
| 点击此处可从《土壤》下载免费的PDF全文 |
|
