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试验用新南威尔士东北部15种酸性土壤,在温室盆栽试验中,研究施用石灰对三叶草产量和磷的吸收的影响,以及对土壤磷和肥料磷有效性和形态变化的关系。石灰用碳酸钙粉末,两个缓冲量小的土壤用量为0,1.5,3.0克/公斤(§39,54),其余土壤用量为0,2.5,5.0克/公斤,土壤放在直径为15厘米不漏水的盆中,灌水到接近75％田间持水量,土壤放在温室中培育32天。接着施
The effects of applying lime on the clover production and phosphorus uptake, as well as on the availability and morphological changes of soil phosphorus and fertilizer P, were studied in 15 acid soils in northeastern New South Wales. Calcium carbonate powder for lime, two small buffer amount of soil 0,1.5,3.0 g / kg (§39,54), the remaining amount of soil 0,2.5,5.0 g / kg, the soil on the diameter of 15 cm Watertight basin, irrigation to close to 75% of the field capacity of water, soil incubation in the greenhouse for 32 days. Then apply