玉米秸秆还田时间和还田方式对土壤肥力和作物产量的影响

Effects of Maize Stems Returning Back to the Field on the Yield of Plants and Soil Fertility

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。

The research was conducted on a long-term experiment (12 years ) designed with the microzone and the effects of maize stems returning back to the field on yield of the plants and soil fertility were investigated. The results showed that : the proper period of returning maize stems back to the field is autumn. Applying decomposed maize stems into the field in spring need much time and work, but can not improve the soil fertility and crop yields significantly; The effects of different returning ways of maize stems back to the field on soil fertility and crop yield are not obvious. Therefore,a proper way of returning should be taken into accant.