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一、试验目的:泾惠灌区位于关中平原中部,土质肥沃,气候温和,是我省主要粮食生产基地之一。粮食作物主要种植方式为小麦——玉米平作,一年两熟。但生产中两料争时矛盾突出,恶性循环严重,玉米播种不及时,易受秋涝低温危害,产量低而不稳。玉米能否早种早收,充分利用6、7月份有利的光能条件,不仅是夺取玉米高产稳产的关键,而且也是保证小麦适时早播,克服两料争时矛盾和恶性循环的重要措施。本试验通过套作和平作对比试验,为充分利用气候资源,选择适宜的种植方式,促进全年粮食高产稳产提供理论依据。
First, the purpose of the experiment: Jing Hui irrigation area is located in the central Guanzhong Plain, fertile soil, mild climate, is one of the main grain production base in our province. The main mode of cultivation of food crops for wheat - corn flat for two crops a year. However, the contradictions between the two materials in production are prominent, the vicious circle is serious, and the sowing of maize is not timely, and it is easily endangered by the low temperature of autumn and flood, and the output is low and unstable. It is not only the key to seizing corn with high and stable yield, but also the important measure to ensure timely sowing of wheat at the right time and overcoming contradictions and vicious cycles of the two crops when taking advantage of favorable light energy conditions in June and July. In this experiment, we make comparative experiments through intercropping for peace and provide a theoretical basis for making full use of climate resources, selecting suitable planting methods and promoting the high and stable grain yield throughout the year.