白银市干旱半干旱山区小麦种子工程建设的思考●张幸福张克厚杨继忠白银市干旱半干旱山区粮食作物种植面积近２００万亩，占全市粮播面积的６２％。在旱地粮播面积中，小麦播种面积占５０％左右。小麦产量的高低直接左右着旱区粮食产量的提高。多年来，旱区小麦产量低而不... Consideration on Construction of Wheat Seeds in Arid and Semi-arid Mountainous Areas of Baiyin ● Zhang Xingfu, Zhang Kehou, Yang Jizhong The area of ​​grain crops in arid and semi-arid mountainous areas is nearly 200 million mu, accounting for 62% of the total grain-sown area in the city. In dry grain sowing area, the sown area of ​​wheat accounts for about 50%. Wheat production directly affects the level of grain output in arid areas. Over the years, low-yield wheat in arid regions ...