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本研究针对红壤水田有机质缺乏,土壤肥力低的状况,开展不同量秸秆还田对麦稻稻三熟的增产作用试验,初步明确三季都实行秸秆还田增产作用最明显,其中生育期较长的小麦和晚稻增幅比早稻大,生产上应优先考虑这两季作物实行秸秆还田。秸秆还田数量早稻直控制在每亩200kg左右,晚稻和小麦可以适当增加。文章还对秸秆还田的效益进行分析。增加经济收入,降低土壤容重,改善土壤理化性状,是红壤水田高产高效、持续利用的有效措施。
In this study, aiming at the lack of organic matter and low soil fertility in red paddy soils, experiments were carried out to study the effects of different amounts of straw returning on the growth of third generation of wheat and rice. The results showed that the effect of returning straw to field was the most obvious, The growth rate of wheat and late rice is higher than that of the early rice, and the production of straw should be given priority in these two seasons. The amount of straw returned to the early rice control in about 200kg per mu, late rice and wheat can be an appropriate increase. The article also analyzes the benefit of straw returning. Increasing economic income, reducing soil bulk density and improving soil physical and chemical properties are effective measures for high yield, high efficiency and sustainable utilization of red paddy fields.