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为探究粉垄等耕作方式对坡耕地水土流失及作物产量的影响,以南方15°坡耕地为研究对象,研究在粉垄耕作与传统耕作2种耕作处理下,木薯生育不同时期坡耕地水土流失情况,以及对木薯产量相关因素的影响。结果显示,在木薯苗期、薯块膨大期和成熟期,与传统耕作相比,粉垄耕作增加土壤蓄水量,且随土层加深蓄水量增加效果更明显,40~60 cm土层土壤蓄水量分别增加14.93%、15.60%和18.03%;地表径流量减少42.03%,土壤流失量减少44.62%,氮、磷和钾养分流失量分别减少49.61%、31.22%和42.49%;木薯产量增加20.13%。粉垄耕作可提高南方旱坡地的土壤蓄水能力,有效减少地表产流次数和径流量,显著减少土壤、水分以及养分的流失,促进木薯生长发育、产量提高。
In order to explore the effects of different cultivation patterns such as Fengyan on soil erosion and crop yield in sloping farmland, taking the 15 ° sloping farmland in the south as the research object, this paper studied the effects of two kinds of tillage treatments such as powder ridge cultivation and traditional tillage on the soil and water loss Conditions, and the impact on cassava production-related factors. The results showed that compared with the traditional tillage, flour mulching increased the soil water storage capacity at the seedling stage, tuber expansion stage and maturity stage, and the effect was more obvious with the deepening soil water storage capacity. The 40-60 cm soil layer Soil water storage increased by 14.93%, 15.60% and 18.03% respectively; surface runoff decreased by 42.03%, soil loss decreased by 44.62%, N, P and K loss by 49.61%, 31.22% and 42.49% respectively; Increase 20.13%. Flour ridge cultivation can improve the soil water storage capacity of the southern sloping land, effectively reduce the number of surface runoff and runoff, significantly reduce the loss of soil, water and nutrients, and promote cassava growth and yield.