论文部分内容阅读
棉花枝叉多,生长点多,结令部位分散,因而使棉株体内营养分配复杂而多变,一旦环境条件失宜,在尖端优势的争夺下,蕾铃首先感到营养不足而脱落。丰南县董代庄大队农事场,几年来,经从表中可以看出:1、由于主茎尖端优势的作用,下部果枝成铃少于对照;但结铃均衡,有上部多于下部的趋势,减少了烂铃。2、徐州1818棉种,后期长势较旺,甩辫”发挥了较好的作用。近主茎成铃数不过反复实验,总结出“围边、打顶、甩辫、封门”八个字的整枝措施。在增蕾保铃创高产中,收到了良好效果。据定棵观察,新整枝法结铃情况如下表:
More cotton branches and more points of growth, node dispersal, so that the nutritional distribution of cotton plants in the complex and volatile, once the adverse environmental conditions, the cutting edge of the advantages of the competition, the first feeling of nutritional deficiencies and fall off. In the past few years, it can be seen from the table that: 1. Due to the predominance of the main stem tips, the bolls of the lower fruiting branches are less than the control; but the bolls of the bolls are balanced with the tendency that the upper part is more than the lower part, Reduce the bad bell. 2, Xuzhou 1818 cotton species, the late growth of more flourishing pigtail “play a better role. Near the main stem into the bell number, however, repeated experiments, summed up the” edge, topping, dreadlock, closed door "eight characters Pruning measures in increasing the bolong Chong high yield, received good results.According to the planted observation, the new pruning bell method as follows: