我县位于河西走廊最西端,是典型的大陆性气候,全年无霜期仅一百五十天左右。春播小麦占夏粮面积的90%,因抽穗至乳熟期的六、七月份,常有干热风严重危害,致使青秕、枯熟,产量大受影响。一九七四年引进墨西哥小麦进行春播试种,同样未能幸免,逼熟后千粒重降低38.8%。面对生产中存在的这一严重问题,我们与贫下中农一道,破除迷信,解放 My county is located in the westernmost Hexi Corridor, is a typical continental climate, the annual frost-free period is only about one hundred and fifty days. Spring wheat sowing 90% of the summer grain area, due to heading to the milky ripening in June and July, often dry and hot wind serious harm, resulting in barley, dry, yield greatly affected. The introduction of Mexican wheat in spring in 1974 for pilot planting was equally spared. After the ripening, the grain weight was reduced by 38.8%. In the face of this grave problem in production, we, together with the poor and the middle peasants, weed out superstition and liberation