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已有报告指出,印度安得拉邦土壤的缺磷相当普遍,需要补充大量 P_2O_5。例如纳加尔朱纳萨加尔工程地区的始成土、淋溶土每公顷需 P_2O_560—80公斤,变性土每公顷需 P_2O_580—100公斤。据报道,在播种前用少量磷肥处理种子,对加速作物生长和提高产量是有效的。同样,秧苗在过磷酸钙制成的泥浆中浸根,也显示有益的效果。因此,浸种或浸根技术已应用于常规土壤对作物的供磷研究。
It has been reported that phosphorus deficiency is very common in Andhra Pradesh, India, and needs to be replenished with a large amount of P 2 O 5. For example, the initial soil formation in the Nagar Sagar project area in Nagar requires P2O5-60-80 kg per hectare of leaching soil and P2O580-100 kg per hectare of denatured soil. It has been reported that treating seeds with a small amount of phosphate prior to sowing is effective in accelerating crop growth and increasing yield. Similarly, seedlings dipped in mud made from superphosphate also showed beneficial effects. Therefore, soaking or root immersion technology has been applied to conventional soil phosphorus for crop research.