论文部分内容阅读
以超高产强筋小麦为试验材料,探讨返青、拔节与孕穗肥施用比例对氮、磷、钾吸收利用、籽粒产量的调节效应。结果表明:拔节期追施氮肥,产量提高,后期施氮有利于磷、钾素吸收效率和运转效率提高。施氮量为300kghm-2条件下,以基肥、拔节肥比例为7∶3较为适宜。
Super high yielding gluten wheat was used as experimental material to study the regulation effect of the ratio of returning green to jointing and booting spike on N, P, K uptake and grain yield. The results showed that nitrogen application at the jointing stage increased yield and nitrogen application at the late stage was beneficial to phosphorus and potassium absorption efficiency and operational efficiency. Nitrogen rate of 300kghm-2 conditions, to basal, jointing fertilizer ratio of 7: 3 is more appropriate.