论文部分内容阅读
现时棉花栽培中,往往追肥多次,花工多,且难掌握。在花铃期追肥,深施难于操作,且易伤根损枝,增加脱落,而浅施或面施,又易冲失挥发减低肥料利用率。同时,棉株进入开花结铃期,正是需肥需水最多而又迫切的决定收成的关键时期。因此及早集中重施追肥而于此时得力,将最为恰当而收效最大。但此时正是棉株的营养生长和生殖生长并进阶段,如肥、水过多,将导致这两种生长不相协调,以至矛盾激化,棉株徒长,蕾铃大量脱落而造成严重减产的后果。我们在1979年即探索解决这个问题,提出应
At present, cotton cultivation, often topdressing many times, spend more, and difficult to grasp. In the flowering period topdressing, deep facilities difficult to operate, and easy to hurt the root injury, increase shedding, and shallow facilities or facilities, but also easy to lose volatile volatile fertilizer utilization. At the same time, cotton plants into the flowering period, it is the need to fertilizer the most water and urgent decision to harvest a critical period. Therefore, early re-implementation of top dressing and effective at this time, the most appropriate and most effective. But at this moment, the vegetative and reproductive growth of cotton plants goes on stage, such as fertilizing and excessive water, which will result in the uncoordinated growth of these two kinds of plants. As a result, conflicts intensify, as a result of. We explored this issue in 1979 and proposed that we should