论文部分内容阅读
棉花进入蕾铃期,是生长发育最旺盛的时期。这时,各对矛盾表现最集中、斗争最激烈.既有营养生长与生殖生长的矛盾,又有群体发育与单株发育的矛盾,还有生长发育所需条件与环境条件的矛盾,处理得好,可以争取“三桃”俱全,如果处理不当,就会造成蕾铃大量脱落,脱落率一般为60～70％,严重的可达80％以上。蕾铃脱落的原因,除病虫为害、机械的直接损伤以外,肥料、光照、雨水、温度等环境条件,都会影响棉花的某些生理过程,引起棉花的营养生长与生殖生长不协调而造成蕾铃脱落。棉花
Cotton into the budding period, is the most vigorous growth and development period. At this time, the contradiction between the pairs of the most concentrated, the most fierce struggle, both the conflict between vegetative and reproductive growth, there are contradictions between group development and plant development, as well as the growth and development of the required conditions and environmental conditions of the conflict, deal with Good, you can fight for the “three peach” taste, if not handled properly, it will cause a large number of falling off, the rate of loss is generally 60 to 70%, a serious up to 80%. The reasons for the falling off of the bolls are that, apart from pests and diseases, direct damage to the machinery, environmental conditions such as fertilizers, light, rain and temperature will affect some physiological processes of cotton and lead to the uncoordinated vegetative and reproductive growth of cotton Bell off. cotton