论文部分内容阅读
1 制种田的选择玉米制种对地块要求比较严格,除安全的隔离条件外,还要求气候条件适宜,土壤肥沃,地势平坦,集中连片,水肥充足等,否则因地力水肥不均匀,制种田生长不整齐,出现大小苗难以调节花期及管理,影响制种产量及种子纯度,甚至导致制种失败。
1 system of choice of corn seed production on the plots of the more stringent requirements, in addition to the safe isolation conditions, but also requires suitable climatic conditions, fertile soil, flat, concentrated contiguous, adequate water and fertilizer, or because of uneven water and fertilizer, system Unfunded farming, the emergence of large and small seedlings is difficult to regulate flowering and management, affecting seed production and seed purity, and even led to the failure of seed production.