连续秸秆还田配施腐熟剂对土壤理化性状及水稻产量的影响

目的]研究连续秸秆还田配施腐熟剂对土壤理化性状及水稻产量的影响。方法]共设3个处理:常规施肥(对照)、常规施肥+秸秆全量还田、常规施肥+秸秆全量还田配施腐熟剂。利用秸秆失重率法研究秸秆还田配施腐熟剂对土壤理化性状和水稻产量的影响。结果]与对照相比,秸秆还田配施腐熟剂、秸秆还田处理的有机质分别增加6.5、5.1 g/kg,有效磷、速效钾分别增加2.6、31.2和2.1、26.6 mg/kg;秸秆还田配施腐熟剂、秸秆还田处理的水稻产量分别较对照高出550、333 kg/hm2,增产6.37%、3.86%。结论]秸秆还田配施腐熟剂能加速秸秆分解,改善土壤理化性状,有利于土壤养分的积累和水稻产量的提高。

The Effects on Physical and Chemical Properties of Soil and Rice Yield by Continuous Straw Returned with Rotten Bacterium Agent

Objective] To study the influence of continuous straw returned with rotten bacterium agent on soil physical and chemical properties and yield of rice.Method] Three kinds of treatments were set: common fertilization (control),common fertilization +straw returned without rotten bacterium agent,and common fertilization +straw returned with rotten bacterium agent.The straw weightlessness rate was used to study the influences of straw returned with rotten bacterium agent on soil physical and chemical properties and rice yield . Result] Organic matters by straw returned with rotten bacterium agent and straw returned without rotten bacterium agent respectively increased by 6.5 and 5.1 g/kg,while availa-ble phosphorus respectively increased by 2.6 and 31.2 mg/kg and available potassium respectively increased by 2.1 and 26.6 mg/kg.Rice yields by straw returned with rotten bacterium agent and straw returned without rotten bacterium agent respectively increased by 550.5 and 333.0 kg/hm2 than control,which increased by 6.37%and 3.86%.Conclusion] The straw returned with rotten bacterium agent can accelerate the de-composition of straw,and increase the soil physical and chemical properties,which is beneficial to the accumulation of soil nutrients and improve-ment the rice yield.