《植物》杂志今年第3期刊登山东大学生物系滕世云的文章《玉米穗分化与叶龄的关系》,其中谈到玉米各器官对肥力水平的反应。1.根对肥力水平的反应玉米第四层以前的节根对肥力水平要求较低,在中等肥力的土壤中带足种肥就可以满足要求,无需追肥,第四层以后的节根对肥力要求较高,需要在这些根即将形成以 Plant magazine magazine published the third issue of this year, Shandong University Department of Biology, Teng Shiyun article “corn ear differentiation and leaf age,” which talked about the response of corn organs to the level of fertility. Roots on the level of fertility response The fourth layer of corn before the root of the lower level of fertility requirements, in medium fertility soil with enough seed fertilizer to meet the requirements, without top dressing, the fourth layer after the root of the fertility The higher requirements that need to be formed at these roots are to take