稻草全量还田不同沤制时间对常规优质晚稻的影响

The impact on normal top-quality late-rice by the different retting times of straw total return-to-field

稻草全量还田不同沤制时间对常规优质晚稻产量的影响不显著,随着沤制时间的增加,产量有小幅的增加;其次在土壤理化性方面,沤制时间越长,土壤的速效磷、速效钾、全氮含量、有机质含量就越高,因而在时间允许的情况下,应尽量延长稻草的沤制时间,使稻草中的氮、磷、钾尽可能多的分解释放出来。

The different retting times of straw total return-to-field have no obvious impact on the yield of normal top-quality late-rice. Along with the increase of retting, the yield will be increased a little bit, and secondarily, in soil physical and chemical characters, the longer retting times mean the higher contents of effective N,P,K and organic matter. When the time is sufficient,the retting times should be longer so that more nutrients can be released.