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本研究的目的是(1)测定某些陰离子对燕麦生长的影响;(2)测定生长效应与磷素吸收关系;(3)比較陰离子与大量施用有机材料效果的大小。材料与方法本研究包括兩个溫室盆栽試驗,用Parson粉砂壤土的表土作試驗用土,經Bhangoo法測定每千吨試驗土中含磷酸鈣态的磷素11磅,与鉄鋁相結合的磷素516磅,有机磷371磅及吸附性磷素125磅。
The purpose of this study was to (1) determine the effect of some anions on the growth of oats; (2) to determine the effect of growth on the uptake of phosphorus; and (3) to compare the effect of anions with the mass application of organic materials. MATERIALS AND METHODS The study consisted of two greenhouse pot experiments with topsoil from Parson silty loam soil as test soil and 11 pounds of calcium phosphate-containing phosphorus per 1000 tons of test soil as determined by the Bhangoo method, phosphorus combined with aluminum 516 pounds, 371 pounds of organic phosphorus and 125 pounds of adsorptive phosphorus.