玉米田110cm大垄立体施肥技术研究

Study on Three Dimensional Fertilization of 110 cm Wide Ridge in Maize Field

为提高肥料利用效率和避免一次性施肥易发生玉米生育后期脱肥现象,以郑丹958为试验材料,研究施用不同类型的氮素及施肥时期对玉米叶绿素含量、叶面积指数、氮肥利用率及产量的影响。结果表明:立体施肥方式以普通氮肥39%+控释氮肥60%基施及大喇叭口期喷施叶面肥为最好,第二位为普通氮肥40%+控释氮肥60%基施,第三位为施普通氮肥40%基肥+拔节期普通氮肥60%追肥,对玉米叶绿素含量、叶面积指数、氮素利用率的影响均以普通氮肥39%+控释氮肥60%基施及大喇叭口期喷施叶面肥为最高,最终达到稳产、高产目的。

A field experiment was conducted to study the effect of different nitrogen and fertilization stage on maize chlorophyll content,leaf area index, nitrogen use efficiency and yield with the variety of Zhengdan 958 to improve fertilizer use efficiency and prevent defertilization during the late growth stage of maize. The results showed that the best three dimensional fertilization method was 39% common ureafertilizer＋60% controlled release nitrogen fertilizers base application and foliar fertilizer spraying during flare opening stage. The second was 40 %common ureafertilizer＋ 60 % controlled release nitrogen fertilizers base application, and the third was 40% common ureafertilizer base application＋ 60% common ureafertilizer at jointing stage. Therefore, 39% common ureafertilizer ＋ 60% controlled release nitrogen fertilizers base application and foliar fertilizer spra ying during flate opening stage had the greatest effect on maize chlorophyll content, leaf area index, nitrogen use efficiency and yield and this method can obtain stable and high yield of maize.