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磷肥在我省从六十年代开始试验并逐步推广,已充分显示了它对提高农作物产量,改善作物品质和改造低产田的重要作用。据近年土壤普查资料表明,在我省5600万亩耕地和果园中,缺磷土壤占90%以上,严重缺磷约占60%左右,增施磷肥已成为我省农业增产的重要措施。当前我省磷肥生产数量很少,供需矛盾很突出,而且质量差,有效磷含量低,品种单一。平均每亩耕地仅施用21.4斤,由于磷肥供应不足,氮磷比例(1:0.22)严重失调,对农业增产极为不利。为充分发挥钙镁磷肥肥效,促进我省农业的增产增收,在省石化局、农业
Phosphate fertilizer in the province from the sixties began to test and gradually promote it has fully demonstrated its important role in improving crop yield, improve crop quality and transform low-yielding fields. According to the data from the soil census in recent years, among the 56 million mu of cultivated land and orchards in our province, phosphorus-deficient soils account for more than 90% and severe phosphorus deficiency accounts for about 60%. Adding phosphate fertilizer has become an important measure for increasing agricultural output in our province. At present, the quantity of phosphate fertilizer production in our province is small, the contradiction between supply and demand is very prominent, and the quality is poor, the available phosphorus content is low, and the variety is single. On the average, only 21.4 kg per acre of arable land is applied. Due to insufficient supply of phosphate fertilizer, the ratio of nitrogen and phosphorus (1: 0.22) is seriously unbalanced, which is extremely unfavorable to agricultural production. In order to give full play to the effectiveness of calcium magnesium phosphate fertilizer to promote the province’s agricultural production increase income in the provincial petrochemical bureau, agriculture