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采用微区和田间两种长期定位试验(12年),探讨了玉米秸秆不同还田时间和还田方式对土壤的培肥作用和对作物产量的影响。研究结果表明,玉米秸秆的还田时间以秋天直接还田并配以适量的微生物快腐剂为好,春天施用腐熟的玉米秸秆不但费工费力,而且对土壤肥力和作物产量没有明显的提高作用;玉米秸秆不同还田方式对土壤肥力和作物产量的影响程度不明显,因此生产上应根据因地制宜的原则,确定适合的还田方式。
Two kinds of long-term experiment (12 years) were used in the micro-area and in the field to study the effect of returning different time of returning corn stalks to the soil and the effect on the crop yield. The results showed that the corn stalks returned to the field in the fall with appropriate amount of microbial fast preservative is better, the application of corn stalks in spring is not only laborious labor, and no significant increase in soil fertility and crop yield ; Corn stalk different return to the soil fertility and crop yield is not obvious, so the production should be based on the principle of local conditions, to determine the appropriate way to return to.