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利用同位素示踪技术,研究了冬小麦（鲁麦14）群体根系吸收活力和群体光合速率变化动态之间的关系。结果表明:返青到成熟,冬小麦群体根系~(32)P吸收活力与群体光合速率符合回归方程y=2.050+1.641x（r=0.8163）;群体根系~(32)P吸收活力与根层~14C光合产物集运速率显著相关（r=0.9629）,其变化主要受根层、茎层、叶层~(32)P矿质集运速率的影响;群体光合速率的变化与根层、茎层和叶层的~(32)P矿质集运速率之间的关系都极为密切,其变化显著受根层~(14)C光合产物集运速率的影响;根层、叶层和穗层的~(14)C光合产物集运速率与其~(32)P矿质集运速率的变化之间关系密切。
The isotope tracing technique was used to study the relationship between root absorption activity and photosynthetic rate dynamics of winter wheat (Lumai 14) population. The results showed that the absorption kinetics of ~ (32) P and the photosynthetic rate of the population in winter wheat population were in accordance with the regression equation y = 2.050 + 1.641x (r = 0.8163). The absorption of ~ (32) (R = 0.9629). The changes of photosynthetic products were mainly affected by the mineralization rate of the roots, stems and leaves ~ (32) P. The changes of photosynthetic rate were positively correlated with the photosynthetic rate of root, stem and leaf (32) P mineralization rates are closely related to each other, and their changes are significantly affected by the transport rate of ~ (14) C photosynthetic products in the root layer. The photosynthetic products of ~ (14) C in root, leaf and ear There is a close relationship between the rate of accumulation and the change of the rate of mineralization of 32 P mineral.