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以绥农14为试验材料,土壤设置5个磷素处理水平,对大豆不同生育时期不同器官的磷素积累分配与转运规律进行研究。结果表明:苗期(V3)大豆叶、茎、根的磷素积累均随土壤磷素水平的提高而显著增加;而到鼓粒盛期(R6),26.62mg/kg土壤磷素水平更有利于荚果磷素的积累;到成熟期(R8),大豆荚果磷素积累量远大于大豆植株其他器官,16.68mg/kg土壤磷水平下更有利于子粒中磷素的积累。营养生长阶段(V3～R1),随土壤磷水平升高,磷素积累量和积累率随之升高,但当土壤磷水平为31.37mg/kg时,磷素积累量和积累率又有所降低;到营养生长和生殖生长并进阶段(R1～R5),积累率以低磷5.68mg/kg所占比重大,45%磷素在此区段积累;生殖生长阶段(R5～R8),除低磷5.68mg/kg水平积累量和积累率极低外,其他处理约有三分之一的磷积累。大豆荚果中的磷素来自营养器官的转移比例:叶>茎>根>叶柄;荚果中的磷素30%以上来自营养器官的转入,其中低磷5.68mg/kg水平转移率最高,达59.65%,随土壤磷水平的增高,其转移率呈波动变化,变幅在29.08%～41.95%之间。
Taking Suining 14 as experimental material, five phosphorus treatments were set up in the soil to study the accumulation and transport of phosphorus in different organs of soybean at different growth stages. The results showed that the accumulation of phosphorus in the leaves, stems and roots of soybean (S) at seedling stage (V3) increased significantly with the increase of soil P level, while that of 26.62 mg / kg The accumulation of P in soybean pod was much greater than that in other organs of soybean plant at the mature stage (R8), and phosphorus accumulation in the seed was more favorable under the phosphorus level of 16.68 mg / kg. At the stage of vegetative growth (V3 ~ R1), with the increase of soil phosphorus level, the accumulation and accumulation rate of phosphorus increased, but when the soil phosphorus level was 31.37mg / kg, the accumulation and accumulation rate of phosphorus were different (R1 ~ R5). The accumulative rate was 5.68mg / kg, and 45% P accumulated in this section. The reproductive growth stage (R5 ~ R8) Phosphorus accumulation at 5.68 mg / kg was extremely low, while about one-third of the other treatments accumulated phosphorus. Soybean pod from the vegetative organs of the transfer rate of phosphorus: leaf> stem> root> petiole; pod more than 30% of phosphorus from vegetative organs into the low-phosphorus transfer rate of 5.68mg / kg level of the highest, up to 59.65 %, With the increase of soil phosphorus level, the transfer rate fluctuated, ranging from 29.08% to 41.95%.