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1997年和1998年,在丘陵旱地进行栽培因素对小麦产量影响的试验,结果表明:①干旱对旱地小麦有着极为显著的影响,干旱年处理平均产量比丰水年下降了28.1%,但减产幅度在品种之间又存在显著差异,即强春性早熟种和弱春性晚熟种减幅较大,春性中熟种相对较小;②播期是影响产量的重要因素之一,根据品种类型抓准最佳播期则能起到明显的抗旱增产作用;③丰水年增施氮素多数处理有显著的增产效果,而干旱年,增氮多数处理无增产作用。密度对产量的影响不大,品种和施氮水平不同,其效应有一定差别。
The results showed that: ①Drought has a very significant effect on dryland wheat, and the average annual output of dry land decreased by 28.1% compared with that of wetland in 1997 and1998. However, There was a significant difference in the yield reduction between the varieties, that is, the strong spring premature and weak spring late-maturing varieties reduced greatly, and the spring relatively less mature varieties; ② Sowing date is one of the important factors that affect the yield. According to The best sowing date for the different types of grazing could play a significant role in drought resistance and yield increase. ③ In most of the wet years, nitrogen increased most of the treatments, while in the dry years, most of the treatments did not increase the yield. The effect of density on yield was not significant, and the effects of different varieties and nitrogen rates were different.