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通过对冬小麦8 种不同栽培方式的试验研究,从经济学产量和产投比的角度进行了分析比较,得出适合于渭北旱原冬小麦全生育期地膜覆盖穴播和膜侧条播栽培方式。其中冬小麦全生育期地膜覆盖穴播产量达2 856.0 kg/hm 2,膜侧条播产量2 638.5 kg/hm 2,分别较对照(露地平作)1 605.0 kg/hm 2 增产1 251.0 kg/hm 2、1 033.5 kg/hm 2,增产幅度达78.0% 和64.4% ,产投比分别达1.78 和1.90,比对照高出21.1% 和29.3% 。
Through the experimental research on 8 different cultivation methods of winter wheat, the paper compares the economic yield and the ratio of production to investment, and draws the suitable cultivation methods of the plastic film mulching and film mulching for the whole growing period of winter wheat in Weibei rainfed highland. Among them, the mulching coverage of winter wheat in the whole growth period reached 2 856.0 kg / hm 2 and the sowing rate in the side was 2 638.5 kg / hm 2, which increased by 1 251.0 kg / hm 2 and 1 605.0 kg / hm 2 compared with the control 033.5 kg / hm 2. The yield increase reached 78.0% and 64.4% respectively, and the production-input ratios reached 1.78 and 1.90 respectively, 21.1% and 29.3% higher than that of the control.