摘要
新型棉花化学杀雄剂的使用会影响棉叶中叶绿素的含量 ,第 1次喷药后 ,叶片中叶绿素a ,b及总叶绿素的含量先下降后上升 ,第 2次喷药后 ,叶绿素的含量单调下降 ,与用药前相比 ,14天后 ,叶绿素a的含量下降了 19% ,叶绿素b的含量下降了 2 5 % ,总叶绿素的含量下降了 18%。在杀雄剂中加入金属离子 (Mn2 +) ,叶片中叶绿素的含量变化规律与只用杀雄剂处理的一致 ,下降幅度也基本相同。表面活性剂PPJ和Mn2 +混合使用能有效地提高棉叶中叶绿素的含量 ,处理时间及PPJ的浓度对提高叶片中叶绿素含量的效果有影响。
The effect of chemical gametocide NO.1 on the content of chorophyll in cotton leaves was studied. The results showed that the content of chorophyll (chorophyll a, chorophyll b and total chorophyll) was decreased firstly and then increased after the first spraying chemical gametocide, the content of chorophyll was decreased monotonously after the second spraying chemical gametocide. Chorophyll a , chorophyll b and total chorophyll were decreased by 19%, 25% and 18% after14d, respectively. Adding metal ion (Mn 2+ ) to chemical gametocide, the similar result was obtained. PPJ and Mn 2+ could effectively increase the content of chorophyll in cotton leaves. The effects of treatment time and the content of PPJ on the content of chorophyll in cotton leaves were studied.
出处
《西南农业大学学报（自然科学版）》
CSCD
2000年第5期435-437,共3页
Journal of Southwest Agricultural University
