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1.春有墒,早覆膜,后播种 早春地返浆,土壤墒情较好时,抓紧整地、施肥、作畦后,立即覆膜。待温度适宜时扎眼播种。这样,可以利用地膜的保水作用,减少地面蒸发,保住墒情,提高保苗率。早覆膜必须做好护膜工作,减少破膜,以提高保湿效果。去年三十里堡公社,有20亩地采用上述做法,保苗率达96％,平均亩产839.9斤,另外20亩地在5月8日覆膜、播种,由于跑墒严重,出苗率仅70％,亩产只有600斤。
1. Spring moisture, early film, after sowing in early spring to return to pulp, soil moisture is better, pay close attention to soil preparation, fertilization, cropping, immediately coated. Sowing the seeds until the temperature is suitable In this way, you can use the membrane of the water retention, reduce evaporation on the ground, to maintain moisture, improve seedling rate. Early film must be done protective film to reduce rupture of membranes in order to improve moisturizing effect. Last year thirty Shili commune, 20 acres of land to adopt the above approach, seedling protection rate of 96%, the average yield of 839.9 kg, the other 20 acres of land in the May 8 film, sowing, due to the serious running moisture, the germination rate of only 70 %, Only 600 kg per mu.