| 生物质炭配施蚯蚓粪对水稻产量及养分吸收的影响 |
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| 引用本文： | 董林林,沈明星,施林林,沈园,王海候,陆长婴.生物质炭配施蚯蚓粪对水稻产量及养分吸收的影响[J].作物杂志,2022,38(5):69-1393. |
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| 作者姓名： | 董林林 沈明星 施林林 沈园 王海候 陆长婴 |
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| 作者单位： | 1国家土壤质量相城观测实验站/苏州市农业科学院,215105,江苏苏州2苏州市农村干部学院,215000,江苏苏州 |
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| 基金项目： | 国家重点研发计划(2016YFD0300903);江苏省自然科学基金(BK20190169) |
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| 摘 要： | 生物质炭配施蚯蚓粪（BEC）可增加土壤碳氮投入,促进作物增产及营养元素的吸收利用。设置3个生物质炭用量梯度（B0：0.0g/kg,B1：6.0g/kg,B2：30.0g/kg）和3个蚯蚓粪用量梯度（M0：不施蚯蚓粪,M1：1%蚯蚓粪,M2：5%蚯蚓粪）,于2018和2019年进行盆栽试验,以研究BEC对水稻产量和营养元素吸收的影响。结果显示,2019年不同处理水稻各部位生物量均高于2018年,籽粒的氮和磷吸收量增加,但吸钾量在B2和M2处理中降低;2018和2019年籽粒生物量与BEC的碳投入量间呈极显著相关（P<0.01）;2019年籽粒生物量与氮投入量显著相关（P<0.05）;BEC产生的碳、氮投入量与氮素收获指数呈正相关,与2018年磷素收获指数间呈不显著负相关,与2019年钾元素收获指数呈显著负相关（P<0.05）,BEC对不同元素吸收利用的影响存在差异。生物质炭配施蚯蚓粪促进了水稻生长,有利于提高化学元素利用率,是培肥中低产田、提高作物产量和养分利用率的有效措施。
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| 关 键 词： | 水稻 生物质炭 蚯蚓粪 养分吸收 元素收获指数 |
| 收稿时间： | 2021-07-14 |
The Effects of Biochar Combined with Earthworm Cast Application on Rice Yield and Nutrient Uptake |
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| Dong Linlin,Shen Mingxing,Shi Linlin,Shen Yuan,Wang Haihou,Lu Changying.The Effects of Biochar Combined with Earthworm Cast Application on Rice Yield and Nutrient Uptake[J].Crops,2022,38(5):69-1393. |
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| Authors: | Dong Linlin Shen Mingxing Shi Linlin Shen Yuan Wang Haihou Lu Changying |
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| Institution: | 1National Agricultural Experimental Station for Soil Quality, Xiangcheng/Suzhou Academy of Agricultural Sciences, Suzhou 215105, Jiangsu, China2Suzhou Country Cadre Institute, Suzhou 215000, Jiangsu, China |
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| Abstract: | The application of biochar combined with earthworm cast (BEC) can increase soil organic carbon and nitrogen input, which has a positive impact on crop yield and nutrient absorption and utilization. The aim of this work was to study the effects of BEC application on rice yield and nutrient absorption. In 2018 and 2019, three biochar gradients (B0: 0.0g/kg, B1: 6.0g/kg, B2: 30.0g/kg) and three earthworm cast gradients (M0: no earthworm cast, M1: 1% earthworm cast, M2: 5% earthworm cast) were evaluated in a pot experiment. The results showed that the biomass of different parts of rice in 2019 was higher than that in 2018, and the absorption of nitrogen and phosphorus in rice grains increased. However, the absorption of potassium decreased in the treatment of B2 and M2. In 2018 and 2019, there was a significant correlation between rice grain biomass and carbon input by biochar and earthworm cast (P<0.01). The amount of carbon and nitrogen input from BEC was positively correlated with nitrogen harvest index, not significantly negatively correlated with phosphorus harvest index in 2018, and significantly negatively correlated with potassium harvest index in 2019 (P<0.05). The absorption and utilization of the three nutrient elements varied greatly from the application amount of BEC. Overall, the application of biochar combined with earthworm cast promoted the growth of rice and improve the utilization rate of chemical elements. It is considered as an effective measure to fertilize medium and low yield fields, improve crop yield and nutrient utilization. |
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| Keywords: | Rice Biochar Earthworm cast Nutrient absorption Element harvest index |
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