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我省每年供应的几十万吨磷肥,绝大部分做种肥使用。因为做追肥和基肥使用的数量不多,所以在播种阶段如何施用好磷肥,对全年促早熟、夺取高产具有重要意义。我省由于无霜期短,五月份降雨量小。作物苗期地温低,土壤速效性养份供应不足,又加上当时作物根系吸收养份的能力弱,所以,施用速效性肥料做种肥,效果较好。特别是磷肥做种肥施用,能加速作物的苗期生育,促进早熟高产。我所玉米施肥试验结果
Hundreds of thousands of tons of phosphate fertilizer supplied in our province each year, the vast majority of fertilizer use. Because of the small amount of top dressing and basal fertilizer used, it is of great significance to apply phosphate fertilizer well in the sowing stage to promote early maturity and high yield throughout the year. Due to the short frost-free period in our province, rainfall in May is small. Low seedling temperature, lack of available soil available nutrients, coupled with the ability to absorb nutrients at the root of the crop is weak, therefore, the use of quick-acting fertilizer as fertilizer, the better. In particular, phosphate fertilizer as fertilizer, can accelerate crop seedling growth and promote early maturity and high yield. I corn fertilization test results