昌黎县大夫庄乡是该县有名的沙地重点乡，全乡12个村，沙地占总耕地面积的40％。1996年全乡播种小麦487hmz，667m’平均产小麦4982公斤，从而连续3年获市小麦丰收一等奖。总结该乡小麦持续高产的主要经验，在于他们能明确地认识到自己的地理位置，土壤条件和小麦在特定条件下的 Changli County doctor Zhuang Township is the county’s famous key township of sand, the township 12 villages, sandy land accounts for 40% of the total area of ​​arable land. In 1996 the township sowed wheat 487hmz, 667m ’average yield of 4982 kilograms of wheat, which won the first prize of wheat harvest for three consecutive years. The main lesson from the continued high yield of wheat in the township is that they can clearly recognize their geographical location, soil conditions and the specific conditions under which wheat