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经2005年4月9日测定:秋季覆膜田块0~20 cm土壤含水量达10.5%,未覆膜的对照0~20 cm土壤含水量仅为5.1%,覆膜后土壤含水率增加1倍多。秋季覆膜田块春季土温上升速度快,据测定,秋季覆膜比不覆膜土壤提前20天解冻,膜内温度提前达到了作物播种的适宜温度。同时介绍了营养穴侧播种技术要点。
On April 9, 2005, the water content of 0-20 cm soil layer in the autumn covered plots was 10.5%, while that of uncoated control was only 5.1% at 0-20 cm. The soil water content increased by 1 after film mulching More times. In autumn, the soil temperature in spring covered with plastic film increased rapidly. It was determined that in autumn, the soil was thawed 20 days earlier than the non-coated soil, and the temperature in the film reached the appropriate temperature for sowing in advance. At the same time introduced the nutrition points of sowing techniques.