丘陵区膜下滴灌与水肥一体化共用的玉米效应分析

Analysis of Maize Effects of Drip Irrigation with Mulch and Integrated Use of Water and Fertilizer in Hilly Area

通过种植玉米试验,研究膜下滴灌与水肥一体化技术共用对玉米产量、水分利用率、肥料利用率及水分生产效益的影响。结果表明,膜下滴灌与水肥一体化有相互协同作用,能显著提高玉米的产量、水分利用率、肥料利用率及水分生产效益,尤其是在遭遇严重干旱天气时,相互促进作用更为明显;玉米产量、水分利用率和水分生产效益均在膜下滴灌与水肥一体化技术共用时达到最大值,分别为14 560.5 kg/hm^2,35.55 kg/(mm·hm^2),46.35元/(mm·hm^2);N,P,K利用率在膜下滴灌与水肥一体化技术共用时分别提高了53.04%,58.25%,44.79%。

In this paper, through the experiment of growing maize, the effects of drip irrigation under mulch and water and fertilizer integration on yield, water use efficiency, fertilizer use efficiency and water production efficiency of maize were studied. The results showed that drip irrigation under mulch and water and fertilizer integration had a synergistic effect of membrane, could significantly improve the yield, water use efficiency, fertilizer use efficiency and water production efficiency of maize, especially in the event of severe dry weather, the interaction was more obvious. The yield, water use efficiency and water production efficiency of maize reached the maximum value under the mulch drip irrigation and water and fertilizer integration technology, which were 14 560.5 kg/hm^2, 35.55 kg/（mm·hm^2）, 46.35 yuan/（mm·hm^2）, respectively. The utilization rate of N, P and K increased by 53.04%, 58.25% and 44.79%,respectively, when mulch drip irrigation combined with water and fertilizer integration technology.