选用大粒重粒的种子,是提高单位面积产量有效而简便的办法,麦种的大小轻重,直接关系着苗全苗旺,而且影响作物产量的高低。每一粒麦种,一定包含着“胚胎”和“胚乳”两部分,胚胎将来发育长成幼苗,胚乳供给胚胎发芽时的养料。我们知道,麦粒瘦小不健 The selection of seeds with large grains and heavy grains is an effective and simple way to increase the yield per unit area. The size and weight of wheat seedlings are directly related to the growth of seedling and seedlings, and affect the crop yield. Each grain of wheat, must contain “embryo ” and “endosperm ” two parts, the future development of embryos grow into seedlings, endosperm supply embryos germination of nutrients. We know that the grain is not healthy