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选择微喷灌水肥一体化常用管理模式,与常规大水冲施管理模式大田进行对比试验,探讨微喷灌水肥一体化管理模式对3个粮饲兼用玉米品种生育时期、主要性状、鲜植株产量、籽粒产量、鲜秸秆产量和茎叶全氮含量养分的影响。结果表明:微喷灌水肥一体化管理模式比常规大水冲施3个粮饲兼用玉米品种生育期平均延长9.6 d,显著增加株高、千粒重,显著降低出籽率和穗粒数,平均鲜植株产量、籽粒产量、鲜秸秆产量分别增加2.62%、1.1%和10.77%;籽粒产量最高的是微喷灌水肥一体化管理模式的郑单958,饲用产量最高的是微喷灌水肥一体化管理模式的先玉688,2种管理模式下籽粒产量排序相同均是郑单958>沃玉964>先玉688,乳熟期鲜植株产量先玉688>郑单958>沃玉964;2种管理模式叶子和茎秆相应部位全氮含量差异不显著,3个生育期叶子的全氮含量显著高于茎秆,呈逐渐降低趋势。
The common management mode of integrated micro-irrigation and water-fertilizer management was selected to compare with the conventional large-scale irrigation management field. The integrated management mode of micro-irrigation and fertilization was applied to investigate the effects of micro-irrigation and fertilization on the growth, yield, Yield, Yield of Fresh Straw and Nutrient Content of Total Nitrogen in Stems and Leaves. The results showed that the integrated management mode of micro-sprinkler irrigation and water management was 9.6 days longer than that of conventional large-scale irrigation and watering maize varieties, significantly increased the plant height and 1000-grain weight, and significantly reduced the seed yield and the number of grains per spike. Yield, grain yield and fresh straw output increased by 2.62%, 1.1% and 10.77% respectively. Zhengdan 958 with the highest grain yield was the integrated management mode of micro-irrigation and fertilization, and the highest forage yield was the integrated management mode of micro-irrigation First jade 688, two kinds of management mode, the same grain yield sorting Zhengdan 958> Wo Yu 964> jade 688, millet ripening Xian Yu 688> Zhengdan 958> Wo Yu 964; two kinds of management mode leaves There was no significant difference in the total nitrogen content between the stems and the corresponding parts of the stems. The content of total nitrogen in the leaves of the three growth stages was significantly higher than that of the stems and decreased gradually.