23.2%砜·喹·嗪草酮对不同马铃薯品种除草效果及产量的影响

Effects of 23.2% Rimsulfuron·Quizalofop-p-ethyl·Clethodim on Herbicidal Efficacy and Yield of Different Potato Varieties

为进一步明确除草剂23.2%砜·喹·嗪草酮与0.136%赤·吲乙·芸苔混用,对马铃薯除草效果的安全增效性。以青薯、夏波蒂、荷兰15、冀张薯及苗后杂草为研究对象,在苗高10～15cm时进行茎叶喷雾。结果表明:23.2%砜·喹·嗪草酮与0.136%赤·吲乙·芸苔混合施用,药后14d对禾本科杂草的防效达90%以上,阔叶类杂草的防效达95%以上,且对作物没有药害。对4个品种马铃薯均有一定的增产作用,其中对夏波蒂增产率最高,达14.1%。23.2%砜·喹·嗪草酮与0.136%赤·吲乙·芸苔混配在马铃薯生产田具有较好的应用前景。

In order to further clarify the safety and synergism of herbicide 23.2 % rimsulfuron·quizalofop p eth yl· clethodim and 0.13 6 % gibberellin·heteroauxin·brassinolide for potato herbicidal effect. We took Qingshu, Xiabodi, Helan 15 ,Jizhangshu and weeds after seedling B. 5rassfca as research objects. Stem and leaf spray was carried out when seedling height was 10 15 cm. The results showed that when 23.2% rimsulfuron-quizalofop p-ethyl-clethodim and 0. 136 % gibberellin·heteroauxin · brassinolide were mixed, the control effect on grasses weeds was more than 90% and broadleaf weeds was more than 95% ,and there was no harm to crops. It had a certain yield increasing effect on four kind of potato varieties, among which, the yield increasing rate was the highest,reaching 14.1%. The mixture of 23. 2% rimsulfuron-quizalofop p ethyl-clethodim and 0. 136 % gib berellin-heteroauxin · brassinolide had a good application prospect in the field of potato production.