行距对超高产小麦产量和品质的影响

Effect of Row Spacing on Grain Yield and Quality of Super-high Yielding Wheat

为了探讨行距对不同超高产小麦品种产量和品质的影响,对5个不同类型的超高产小麦品种在相同密度(基本苗225万/hm2)、不同行距条件下的产量及品质性状进行了研究。结果表明,相同密度下,不同品种的产量、小穗数、成穗数总的趋势是以16.67cm行距时最高;不同品种要实现最大成穗数所要求的最佳行距不同:周麦16和矮早8以行距16.7cm时最高,温麦6-986和百农9711以行距20cm时最高,偃师4110以行距23.3cm时最高;行距的大小对超高产小麦的蛋白质含量、沉淀值无显著影响。在生产上可以根据不同超高产小麦品种各产量构成因素对产量的贡献不同,通过调整行距、增加成穗数以获得增产。

To study the effects of row spacing on grain yield and quality of different (super-high) yield wheat (varieties), the properties of grain yield and quality of different (super-high) yielding wheat (varieties) were studied under different row spacing. The results showed that the trend of grain yield, total spikelet number and ear number of (super-high) yielding wheat varieties under the same planting density(225×10~4/hm^2) was that the highest of that were obtained at row spacing 16.67 cm. The optimum row spacing required for realizing the biggest ear number of (super-high) yielding wheat varieties was different because row spacing and variety of (super-high) yielding wheat interact on ear number. The biggest ear number were inchieved at row spacing of (16.7 cm) for Zhoumai 16 and Aizao 8, for Wenmai 6-986 and Bainong 9711 at 20 cm and for Yanshi 4110 at 23.3 cm. The influences of row spacing on the main quality properties, such as protein content and (sedimentation) value,were not significant. It suggests that grain yield may be increased by adjusting row spacing for raising ear number based on the (effects) of each yield components on yield of (super-high) yielding wheat (varieties).