冬小麦地上部器官氮磷钾的积累分配和运转的研究

Study on the accumulation, distribution, and transportation of N, P, and K in above ground organs of winter wheat

对潮土肥力定位试验地有关施肥处理采样测定 ,结果表明 ,有机、无机肥配合可提高冬小麦吸收N、P、K数量和延续吸收时间到灌浆期 (乳熟中期 ) .扬花期是吸收P、K高峰期 ,之后茎秆叶鞘中K开始向其他器官转移或被再利用 ,灌浆期至成熟期有、无机肥配施及N、P、K处理茎秆叶中K显著减少 1 / 3到1 / 2 .生产实践中重施底肥 。

The combined application of enhanced and organic fertilizers enhanced the uptake of N, P, and K by winter wheat. In addition, the uptake time period could extend to the filling stage. The uptake peak appeared at the flowering stage. Thereafter, K in the leaf sheath was transported to or re-used by other organs. Therefore, the K contents in the stems and leaves were declined by 1/3 to 1/2 from filling to maturity dates.