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以９种豆科牧草为试材，在缺磷砂土上研究施用Ｃａ（Ｈ２ＰＯ４）２后对其产酸量的影响。结果表明：Ｌｕｐｉｎｕｓａｌｂｕｓ，Ｌｕｐｉｎｕｓｌｕｔｅｎｓ和Ｂｉｓｅｒｒｕｌａｐｅｌｅｃｉｎｕｓ施磷需求量比Ｃｉｃｅｒａｒｉｔｉｍｕｍ，Ｖｉｃｉａｆａｂａ，Ｍｅｄｉｃａｇｏｐｏｌｇｍｏｒｐｈａ，Ｏｒｎｉｔｈｏ－ｐｕｓｓａｔｉｖｕｓ和Ｔｒｉｆｏｌｉｕｍｓｕｂｔｅｒｒａｎｅｕｍ低，而Ｌｕｐｉｎｕｓａｎｇｕｓｔｉｆｏｌｉｕｓ需求量最高。当增施磷肥，使其达到中度缺磷水平时，比酸度有所增加，但进一步增施磷肥则使植株产酸量减少，在几种植物中，Ｃ．ａｒｉｅｔｉｎｕｍ产酸量最高，Ｂ．ｐｅｌｅｃｉｎｕｓ最低。比酸度与过量阳离子、灰碱、钙和镁等浓度有关。在不考虑施磷和植物品种的情况下，植物产酸总量与植株地上部分过量阳离子总量恰好一致；在施磷量不同的情况下，豆科植物产酸量主要由其吸收阳离子和阴离子的差异决定。
The effects of Ca (H2PO4) 2 on the acid production of the nine legume forages were studied on phosphate-deficient sand soil. The results showed that the phosphorus demand of Lupinusalus, Lupinuslutens and Biserrulapelecinus was lower than that of Ciceraritimum, Viciafaba, Medicagopolgmorpha, Ornitho-pussativus and Trifoliumsubterraneum, while the demand of Lupinus angustifolius was the highest. Phosphorus fertilizer, when it reached a moderate level of phosphorus deficiency than the acidity has increased, but the further increase of phosphate fertilizer plant acid production decreased in several plants, C. Arietinum highest acid production, B. pelecinus lowest Than the acidity and excess cation, alkali, calcium and magnesium concentrations related. Regardless of phosphorus and plant varieties, the total amount of plant acid production is exactly the same as the total amount of excess cations in the above-ground parts of the plant. In the case of different amounts of phosphorus, the amount of acid produced by the legumes is mainly determined by their absorption of cations and anions The difference is decided.