杂交小麦品种绵杂麦168稀植高效栽培技术初探

为解决杂交小麦生产用种量大，种子生产成本高这一难题，加速杂交小麦新品种在生产上的推广应用,特就施氮量与密度对绵杂麦168产量的影响进行了研究。试验采用两因素裂区设计，施氮量为主区，密度为副区，施氮量与密度各5水平。结果表明，施氮量、密度以及施氮量与密度的互作都极显著地影响绵杂麦168的产量。产量随着施氮量的增加而呈增加趋势；产量随着密度的增加也呈增加趋势，但在密度极高的情况下，产量又有所下降。在基础地力中等水平的情况下，在低用种量（密度≤165×104基本苗／hm2）下，在施氮量为150～300kg／hm2情况下，种植绵杂麦168可获得高于6750kg/hm2的产量和高于8000元／hm2的经济效益。

Preliminary Study on High-yielding Cultivation Measures with Low Plant Density of the Two-Line Hybrid Wheat Variety-Mian Za Mai 168

Two-factor split-plot design was used in this paper to study the effect of nitrogen application rate and plant density on the yield of the two-line hybrid wheat variety-Mian Za Mai 168.The results showed that, nitrogen application rate, plant density and their interaction influence the yield significantly. The yield increased both with the increase of nitrogen application rate and plant density, but declined in very high plant density. The results also showed that, in the low plant density ,that is, basic seedlings lower than 165×104／hm2, planting Mian Za Mai 168 could obtain yield above 6750kg/hm2 and economic benefits higher than 8,000yuan／hm2 in the condition that the soil fertility were in the middle level and the nitrogen application rate were 150～300kg／hm2.