| Cite this article: | 刘仲秋,吴浩,朱文帅,等.微喷 补灌水肥一体化下水氮管理对夏玉米茎杆抗倒伏研究[J].灌溉排水学报,0,():-. |
| LIU Zhongqiu,WU Hao,ZHU Wenshuai,et al.微喷 补灌水肥一体化下水氮管理对夏玉米茎杆抗倒伏研究[J].灌溉排水学报,0,():-. |
|
| |
|
|
| This article has been：Browse 922Times Download 0Times |
|
|
|
| DOI： |
|
| Research on Lodging Resistance of Summer Maize Stem by Water and Nitrogen Management with Water and Fertilizer Integration by Micro-spraying |
|
LIU Zhongqiu1,2,3, WU Hao1,2,3, ZHU Wenshuai1,2,3, ZHANG Junpeng1,2,3, LI Quanqi1,2,3, YANG Jinsheng4
|
|
1.College of Water Conservancy and Civil Engineering,Shandong Agricultural University,Tai'2.'3.an;4.College of Agriculture,Jilin Agricultural University
|
| Abstract: |
| 【Objective】Micro-spraying hose irrigation has the advantages of strong controllability, but there are few studies on the lodging resistance of summer maize stems under the integration of micro-spraying supplementary irrigation and fertilizer. A water and nitrogen management suitable for high yield and high resistance of summer maize under the condition of water and fertilizer integration in Huang-Huai-Hai Plain should be established. 【Method】In order to study the comprehensive effects of different supplementary irrigation times and nitrogen management on the lodging resistance characteristics of summer maize, two micro-spraying supplementary irrigation level (W) and nitrogen application rate (N) were carried out, namely, supplementary irrigation 4 times (W1) at the beginning of sowing, jointing, beg bell, and heading stage, 2 times (W2) at sowing and big bell stage, the amount of nitrogen application of 210 kg / hm2 (N1) and 150 kg / hm2 (N2). To explore the comprehensive optimization of lodging resistance and yield of summer maize, the plant character parameters, mechanical index and lodging resistance index of the last third internode, the plant in-situ lodging resistance, inclination angle and yield of summer maize at different growth stages were studied.【Result】The effect of N1 treatment was the best, which significantly reduced the plant height at heading stage and dough stage, as well as the center of gravity height at heading stage and filling stage; the bending strength, puncture strength and radial compressive strength at the filling stage, as well as the lodging resistance index at the filling stage and the dough stage were significantly improved, the lodging resistance index of W1N1 treatment increased by 68.56%, 15.01% and 28.23% respectively compared with W2N2 treatment at heading stage, filling stage and dough stage; the lodging resistance at different lodging angles and critical lodging resistance at different growth stages of summer maize plant were significantly improved, the critical lodging resistance of W1N1 treatment increased by 44.03%, 48.40% and 30.49% respectively compared with W2N2 treatment at heading stage, filling stage and dough stage. The comprehensive evaluation of lodging resistance index and critical lodging resistance showed that W1N1 treatment at different growth stages had the highest comprehensive lodging resistance and W2N2 treatment was the lowest; The comprehensive evaluation of lodging resistance index, critical lodging resistance and yield showed that the comprehensive lodging resistance of WIN1 treatment and W2N1 treatments at dough stage was significantly higher than that of W1N2 treatment and W2N2 treatments.【Conclusion】Based on the factors of lodging resistance, crop water demand and integration of water and fertilizer, W1N1 treatment is the best combination scheme to realize lodging resistance and grain high yield. |
| Key words: summer maize; micro-spraying supplementary irrigation; water and nitrogen management; stem lodging resistance |
|
|
|
|
|
|
