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在干旱少雨地区,夏季休耕是实现作物稳产、增产的一项可行的生产措施。但在夏季降雨量为350mm的地区,实行等高耕作并加强作物残茬管理,也是提高作物产量和增加夏季土壤水分贮量的有效措施。作物残茬管理试验设计为3个处理,4次重复,以常规耕作为对照。试验期限为3年。等高耕作可提高冬季水分贮量82±49mm。直立残茬较砍倒残茬提高水分贮量10±37mm,较燃烧残茬提高63±30mm。本研究表明,水分贮量的增加并不能反映出大麦产量的增加,但在某种程度上,(土壤水分贮量的增加)可以提高作物的经济产出。
In arid and dry areas, summer fallow is a feasible production measure to realize stable crop yield and increase yield. However, in areas with a rainfall of 350 mm in summer, the implementation of contour tillage and the management of crop stubble are also effective measures to increase crop yield and increase summer soil water storage. The experiment of crop stubble management was designed as 3 treatments and 4 replications, taking the conventional tillage as control. The test period is 3 years. High tillage can improve winter moisture storage 82 ± 49mm. Vertical stubble than cutting stubble to improve water storage capacity of 10 ± 37mm, combustion residues than improve 63 ± 30mm. This study shows that an increase in water storage does not reflect an increase in barley production, but to some extent, (an increase in soil water storage) can increase the economic output of the crop.