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采用失重率法研究稻草还田10、20、30天稻草腐熟程度变化,筛选出适合定南县的秸秆腐熟剂品种。试验结果表明:在稻草还田后,施用秸秆腐熟剂的处理0~10天秸秆的腐解速度最快,而未施用腐熟剂的处理,秸秆在还田10~20天腐解速度最快。早稻稻草还田对下季水稻有增产作用,秸秆还田后施用腐熟剂的处理比不施用腐熟剂的增产效果更明显,增产幅度为14.08%~22.91%。
The weight loss rate method was used to study the degree of maturity of straw on the days of 10, 20 and 30 days of straw returning, and the maturity varieties of straw suitable for Dingnan were screened out. The results showed that after the straw was applied to the field, straw decomposing application of straw maturity was the fastest from 0 to 10 days after the straw was applied. Without the application of the maturity agent, the decomposition rate of straw was the fastest in 10 to 20 days. Rice straw returning to early rice had the effect of increasing yield on the rice in the next season. The treatment of applying the rice straw after returning straw to straw was more obvious than the yield increase without applying the rice straw maturity agent, the rate of increase was 14.08% -22.91%.