稻麦秸秆连续还田配施腐熟剂对土壤性状和水稻产量的影响

Effects of continuous rice and wheat straw returning to field with decomposing agent on soil properties and rice yield

为提高秸秆还田的利用效率,从2010年起,分别在上海市奉贤区奉城镇、柘林镇和庄行镇采用大田试验研究了秸秆连续还田配施腐熟剂对土壤性状和水稻产量的影响。结果表明:稻麦秸秆连续还田5年后,与对照相比,秸秆还田配施腐熟剂处理和秸秆还田处理的土壤有机质含量分别增加4.1 g∕kg和2.2 g∕kg,速效钾含量分别增加45 mg∕kg和34 mg∕kg;秸秆还田配施腐熟剂处理和秸秆还田处理的水稻产量分别较对照提高717 kg∕hm^2和814 kg∕hm^2,增产7.79%和8.84%。可见,秸秆连续还田可以有效提高土壤有机质和速效钾含量,增加水稻产量,秸秆连续还田配施腐熟剂具有促进秸秆分解的作用,有利于土壤养分的积累和水稻产量的提高。

In order to improve the utilization efficiency of straw,the effects of continuous straw returning with decomposing agent on soil properties and rice yield were studied in field in Fengcheng Town,Zhelin Town and Zhuanghang Town of Fengxian District from 2010 onwards.The results showed that after 5 years of continuous rice and wheat straw returning,compared with the control,the soil organic matter of straw returning to field with composting agent treatment and straw returning to field treatment increased 4.1 g∕kg and 2.2 g∕kg,and available potassium increased 45 mg∕kg and 34 mg∕kg,respectively.The rice yield of straw returning to field with decomposing agent treatment and straw returning to field treatment were 717 kg∕hm2 and 814 kg∕hm2 higher than that of the control,increased by 7.79%and 8.84%respectively.It can be seen that continuous straw returning can effectively improve the content of soil organic matter and available potassium,and increase rice yield.Continuous straw returning with decomposing agent can promote the decomposition of straw,which is beneficial to the accumulation of soil nutrients and the increase of rice yield.