印度很多耕地普遍缺磷,已成为作物生产的严重问题。新开垦的地区问题尤其严重。各种作物从土壤和肥源中吸收磷的能量并不一致,水稻、高梁、小米、大麦等能较多地有效利用土壤中的磷酸盐,而小麦和玉米则能较多地吸收化学肥料中的磷酸盐。豆料作物中,大豆能较好地利用化学肥料中的磷酸盐,而绿豆则能较好地利用土壤中的磷酸盐。根深和生长缓慢的作物如棉花和蓖麻会更多地利用土壤中的磷酸盐,而根浅的、生长快速的作物如豇豆、豌豆、小米和高粱施用磷酸盐后反应明显。豆科作物是大量需要磷肥的作物,比禾谷类作物更能有效地利用磷作营养。印度农业研究理事会试验表明:豆科作物中的豌豆、胡豆、鹰嘴豆、黑豆、小扁豆、黑 The general lack of phosphorus in many cultivated land in India has become a serious problem in crop production. The problem of newly reclaimed areas is especially serious. The energy absorbed by various crops from soil and manure sources is not consistent. Rice, sorghum, millet and barley can effectively utilize the phosphate in the soil while wheat and corn can absorb more of the chemical fertilizers Phosphate. Soybean crops, soybean can make better use of chemical fertilizers in the phosphate, while mung bean is able to make better use of soil phosphate. Deep-rooted and slow-growing crops such as cotton and castor make more use of phosphate in the soil, whereas the response to root-thick, fast-growing crops such as cowpea, pea, millet and sorghum is pronounced after phosphates. Legume crops are crops that require large amounts of phosphate fertilizer, making them more efficient for phosphorus use than cereal crops. Indian Agricultural Research Council test showed that: legume crops peas, walnuts, chickpeas, black beans, lentils, black