The NPK uptake rates by maize varied with the development of maize growing processes, but all of them appeared two peak periods.
The NPK uptake rates by maize varied with the development of maize growing processes, but all of them appeared two peak periods.
玉米氮磷钾吸收速率随着玉米生长过程发展而改变，但所有玉米品种都出现两个吸收高峰期（表1和图1）。