一、我县大部分土壤缺磷陵县农业外资办在中国农科院土肥所的指导下,从1984年开始对小麦、夏玉米和棉花等农作物进行了节约用磷、经济施磷的多点试验,并将施用方法在全县推广,取得了较高的经济效益。1.小麦将每亩底施40公斤的过磷酸钙分成两份,25公斤撒在地表。耕翻后把另外15公斤撒在垡头,然后深耙一遍、浅耙两遍,耙透、耙细、耙平后播种,可 I. Most of the soil in our county lacks Agricultural Foreign Investment Office of Phu Ling County Under the guidance of the Soil and Fertilizer Institute of Chinese Academy of Agricultural Sciences, starting from 1984, it has carried out the conservation of phosphorus by using crops such as wheat, summer corn and cotton, Test, and the application method in the county promotion, achieved higher economic benefits. 1. Wheat will be applied at the end of 40 kg per acre of SSP divided into two, 25 kg sprinkled on the ground. Plow the other 15 kg sprinkled in the first stirrup, and then rake it again, shallow rake twice, rake through, rake fine, flat rake after planting, may