不同秸秆还田量对水稻产量及土壤养分的影响

Effects of Different Amount of Straw Returning on Rice Yield and Soil Nutrient

以水稻品种淮稻5号为供试材料,研究了不同秸秆还田量对水稻产量及土壤养分的影响。结果表明:秸秆全量还田较秸秆半量还田水稻产量有所提升,但差异不显著;2种秸秆还田量,土壤有机质、碱解氮、速效磷含量均有所提升,但秸秆全量还田效果较好,有机质、速效磷含量提升率达10%以上,可有效培肥地力。

Taking rice variety Huaidao 5 as the research object, effects of different amount of straw returning on rice yield and soil nutrient were studied.Results showed that：compared with half-amount straw returning,the rice yield was increased under total-amount straw returning,but the difference was not significant;the content of soil organic matter, alkali-hydro nitrogen,available phosphorus were increased under the two amounts of straw returning, but the effect of total-amount straw returning was better, the content of organic matter and available phosphorus increased more than 10%,enriching the soil fertility effectively.