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EFFECTS OF REDUCED TILLAGE ON FOOD LEGUME PRODUCTIVITY

机译：减少耕作对食物豆类生产率的影响

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The trend toward eliminating tillage before sowing food legumes directly into crop residues has been driven by the need to reverse soil degradation. It has been stimulated by the accrual of benefits such as improved timeliness of sowing, less labour and machinery input, effective weed control using herbicides, less erosion and runoff, increased soil water storage and improved soil physical and organic fertility. The productivity of food legumes is not reduced by eliminating tillage, and in many instances, is higher due to improvements in some site-specific limiting factor(s). The nitrogen dynamics of food legumes tend to be improved under no-tillage, with small increases being reported in nitrogen fixation and the proportion of plant nitrogen derived from fixation. The beneficial effects of no-tillage in some environments, has been due to the improved establishment of food legumes and in others to a reduction in pest and disease incidence. In rain-fed agriculture, benefits of no-tillage have been due largely to improved soil water storage and availability to food legumes.
机译：在播种食物豆类直接进入作物残留物之前消除耕种的趋势已经是逆转土壤退化的推动。它受到促进的效益，如改善播种的及时性，劳动力和机械投入，使用除草剂的有效杂草控制，较少的侵蚀和径流，增加土壤储水和改善土壤物理和有机生育。通过消除耕作，在许多情况下，食物豆类的生产率不会降低，因此由于某些特定于位点特异性限制因子的改善，更高。在无耕作下，食品豆类的氮动力学趋于改善，氮固定中的氮气固定较小，植物氮的比例衍生自固定。无耕作在某些环境中的有益效果是由于改善了食物豆类的建立，并在其他方面降低了害虫和疾病发病率。在雨粮农业中，无耕作的益处一直在很大程度上是为了改善土壤储水和食物豆类的可用性。

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