摘要： 对两个冬小麦品种主要生育期N、P₂O₅吸收积累与小麦不同生育阶段光合产物积累及产量关系进行了系统研究，结果表明，小麦生育中前期光合产物积累随N、P₂O₅吸收积累的增加而呈直线或曲线增加，但过多的N积累对开花后光合产物积累及籽粒产技的提高均产生不利影响；确定了小麦不同生育阶段N、P₂O₅吸收积累的适宜指标和范围，并根据N、P施肥与小麦N、P₂O₅吸收积累的关系明确了小麦N、P₂O₅吸收积累主要与氮磷施肥有关，据此提出了保持小麦生育过程中适宜氮磷营养的施肥调控技术措施。

关键词: 冬小麦, 产量, 氮磷营养, 施肥技术

Abstract: Field trials were conducted to study the relationship between absorption oi N, P₂O₅ and accumulation of photosynthate in the main growing stages and grain yield by using two varieties of winter wheat during 1986-1990.The results showed that the accumule-tion of photosynthatc increased with absorption of N, P₂O₅ in the early growing siage.The excessive absorption of N would induce unfavourable effect on the post-anthcsis biomass accumulation and final yield.The suitable criteria of N and P₂O₅ absorption in main growing stages were determined.And also it was revealed that N and P₂O₅ absorption and accumulation were mainly related to the amount of N and P₂O₅ applied.Based on the result, monitoring techniques for fertilizer used to maintain suitable N and P₂O₅ levels in wheat were established.

Key words: Winter wheat, Yield, Nilrogcn, Phosphorus, Technique of fertilizer application