摘要
本文采用网隔栽培室种植小麦，置于人工气候室内生长，对不同温度条件下土小麦根际及距根不同距离土体中ｐＨ，ＯｌｓｅｎＰ及无机磷组分动态变化进行了研究。主要结果有：（１）根际及０～３ｍｍ土体ｐＨ较低，而３～８ｍｍ和８～５０ｍｍ土体ｐＨ较高；（２）ＯｌｓｅｎＰ含量为根际＜０～３ｍｍ土体＜３～８ｍｍ和８～５０ｍｍ土体，温度升高，各土层ＯｌｓｅｎＰ含量呈降低趋势；（３）距小麦根系越近，Ｃａ２Ｐ、ＡｌＰ、ＦｅＰ和Ｃａ８Ｐ含量越低，ＯＰ和Ｃａ１０Ｐ变化不明显；随时间延长和温度升高，Ｃａ１０Ｐ含量有所增加，Ｃａ２Ｐ、ＡｌＰ、ＦｅＰ和Ｃａ８Ｐ含量有所降低。
The net separation culture pots were empoyed to plant winter wheat Those pots were put into E8H artificial climate box The pH, Olsen P and inorganic phosphate form in cumulic cinnamon soil under vary temperature conditions were studied The results showed that: (1) the pH of wheat rhizosphere and 0～3 mm soil layer were higher than that of 3～8mm and 8～50mm soil layers; (2) the furthest from the wheat roots, the content of Olsen P was higher and the content of Olsen P was reduce with the temperature ; (3) In more near from the wheat roots, the content of Ca 2 P, Al P, Fe P and Ca 8 P, was lower, and the content of O P and Ca 10 P had no obvious change With growth time prolonged and temperature raised , the content of Ca 10 P was inerease, Ca 2 P, Al P,Fe P and Ca 8 P were decrease, and O P had no obvious change
出处
《植物营养与肥料学报》
CAS
CSCD
1999年第1期32-39,共8页
Journal of Plant Nutrition and Fertilizers
