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本文用~(22)P示踪法测定了油松和豆科植物的含磷根系分泌物的组分和数据,并研究了两者的相互关系。据测定,油松的含磷根系分泌物的排出率为15～23％,豆科植物为5～14％。含磷根系分泌物中。水溶性组分约占66～76％,脂溶性组分15～19％,其余为含磷蛋白质。试验证明,在油松与豆科植物之问,存在着明显的含硫化合物交流现象。根据上述材料,作者认为油松与沙打旺、草木间作,在磷素营养方面可能比与小冠花间作更有利。
In this paper, the composition and data of phosphorus-containing root exudates of Pinus tabulaeformis and leguminous plants were determined by ~ (22) P tracer method and their correlations were studied. According to the determination, the discharge rate of Pinus tabulaeformis root exudates is 15 ~ 23%, leguminous plants is 5 ~ 14%. Phosphate-containing root exudates. Water-soluble components account for about 66 ~ 76%, fat-soluble components 15 ~ 19%, the rest of the phosphorus-containing protein. Tests show that in the pine and legume asked, there is a clear exchange of sulfur compounds phenomenon. According to the above materials, the author believes that Pinus tabulaeformis and sand, Mongolian intercropping, in the phosphorus nutrition may be better than the intercropping.