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1981—1982年连续两年进行了油菜秸杆直接还田肥效的研究,基本弄清了在黄壤性稻田实行油菜秸杆还田的改土增产效果和主要原因。结合当前生产水平,在黄泥田上油菜秸杆还田的适宜用量为每亩500—600斤(相当于亩产200斤油菜籽的秸杆产量),再配施氮素3.7斤调节C/N到41左右的增产效果最好,两年平均水稻每亩每年增产稻谷124.5斤,每100斤秸杆可净增产稻谷7.5斤,
From 1981 to 1982, the research on the efficiency of rapeseed straw directly returning to the field was carried out for two consecutive years, and the effect and the main reasons for soil improvement and yield increase of rapeseed straw returning to the field were basically clarified. In combination with the current production level, the optimum amount of rapeseed straw returning to field on yellow muddy soil is 500-600 kg per mu (equivalent to 200 kg of rapeseed straw per mu), and nitrogen and 3.7 kg of C / N To 41 or so the best yield increase, the average annual rice yield 124.5 kg per mu per annum, 100 kg of straw net increase of 7.5 kg of rice,