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在酸性,沙质和阳离子交换能力低的上壤中栽培花生,需要施Ca,长期认为仅是个营养问题(阿拉切斯·海保格亚L)。从1987年到1989年期间,美国在14个参试点进行了四个花生品种施用石膏的Ca试验,以改善花生的产量,品质和种子的发,芽能力。在试验土壤中的施Ca量从48～242毫克/公斤,对花生的经济性状进行了对比分析。其中,五个参试点土壤宁可代换性Ca含量很低,(以石膏计<158毫克/公斤),栽培的四个花生品种,由于施用石膏都获得了,增产。但是其影响幅度因品种而异。对“GR7”和“Southcrn·R”品种花生来说,要使花生仁的成熟度增加,须使土壤中合Ca水平比籽粒产量要求所需的Ca更高些,发芽率和种子生活力两者都与种子的含Ca浓度有密切关系。对参试的四个栽培品种,为得到更高的发芽率,种子中Ca的铲含量每公斤最低要备368和414毫克之间。在361和445毫克/公斤范围内,Ca的多少与种籽的生活力直接相关,土壤含Ca与发芽率或种子生活力之间的相关程度要比种子合Ca与发芽率或种子生活力相关程度小些。全部有关Ca与发芽的关系式都表明,用于生产花生种子的土壤所需要的可代换性Ca,要比一般生产所需的Ca多。
Cultivation of peanuts in soils with low acid, sandy and cation exchange capacity requires the application of Ca, which has long been identified as a nutritional problem (Arachez-Epinal L). From 1987 to 1989, the United States conducted Ca tests on four peanut varieties for gypsum application at 14 pilot stations in order to improve peanut production, quality and seed germination and bud ability. The amount of Ca applied in the test soil ranged from 48 to 242 mg / kg, and the economic traits of peanut were comparatively analyzed. Among them, the content of Ca in soils at the five pilot sites was rather low (Ca. 158 mg / kg as gypsum). Four cultivated peanut varieties were obtained due to the application of gypsum, and the yield was increased. But the magnitude of its impact varies by breed. For peanuts of “GR7” and “Southcrn.R” varieties, to increase the maturity of peanuts, the level of Ca in the soil should be higher than the Ca required for grain yield, and the germination rate and seed viability should be Those are closely related to the concentration of Ca in the seeds. For the four cultivars tested, to achieve higher germination rates, the Ca content in the seeds should be between 368 and 414 mg / kg. Within the range of 361 and 445 mg / kg, the amount of Ca was directly related to the viability of seed, and the correlation between soil Ca and germination or seed viability was more than that of seed Ca and germination or seed viability To a lesser extent. All the correlations between Ca and germination show that the soil available for the production of peanut seeds requires more Ca than that required for normal production.