石阡县有30％左右的耕地分布在高寒山区,这些地区种植小麦,常常空秕率高,质量低,个别情况甚至颗粒无收。造成空秕率的原因是:一、气候因素,高原地区雨雾多,光照不足,昼夜温差小,是导致千粒重低,空秕率高的原因之一。二、叶片早衰。早衰的原因初步认为:一是白粉病、三种锈病和赤霉病的危害;二是麦田生育后期脱肥;三是麦田排水不畅。三、高原不良的气候 About 30% of the cultivated land in Shiqian County is distributed in the alpine mountains. Wheat is planted in these areas, often with high vacancy rates, low quality and even crop failure in individual cases. The reasons for the skyrocketing rate are as follows: First, the climatic factors are that there are more rain and fog in the plateau area, lack of illumination and small temperature difference between day and night, which is one of the reasons leading to the low weight of one grain and the high rate of empty plutonium. Second, premature leaf failure. Premature decline of the reasons that: First, powdery mildew, three kinds of rust and scab; the second is the post-fertile wheat crop de-fertilization; Third, poor drainage of wheat fields. Third, the bad weather on the plateau