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农田在自然资源存在的可能范围内,应予实现的生产力谓之农田“生产潜势”。基于农业生产是能量转化的这一事实,作为重要资源的水分,则是农田“生产潜势”的基础之一。新疆灌溉农田由于处于干旱半干旱地带。土质一般偏沙性,有机质较少,所以农田水分的物理蒸发、渗漏、径流等散失,是灌溉农田“生产潜势”开发的主要障碍。但在生产水平很低的情况下,远未形成制约因素,因地力差异悬殊造成产量差异之大,充分揭示了农田肥力水平在相当大的程度上制约着农田水分转化效率,这是农田水分转化效率不高的根本原因。衡量农田水分转化
Farmland Within the scope of the possible existence of natural resources, the productivity that should be achieved refers to the “production potential” of farmland. Based on the fact that agricultural production is an energy conversion, water as an important resource is one of the foundations of the “production potential” of farmland. Irrigated farmland in Xinjiang is in arid and semi-arid zones. Soil is generally partial sand, organic matter less, so the physical evaporation of farmland water, seepage, runoff and other loss, irrigation farmland “production potential” development of the main obstacles. However, in the case of low production level, far from the formation of constraints, due to great disparities in productivity caused by large differences in production, fully revealed that the level of farmland fertility constraints to a considerable extent, farmland water conversion efficiency, which is farmland water conversion The root cause of inefficiency. Measure farmland water conversion