斯美地苗床薰蒸处理对辣椒猝倒病和杂草的防除效果

Control Effects of Metam-sodium Fumigation on Damping-off of Capsicum and Weeds on Seedbed

用斯美地对辣椒苗床进行熏蒸试验,结果表明,32.7%斯美地水剂对辣椒猝倒病[Pythium aphanidermatum(Edson) Fitzpatrick]有预防作用,对杂草有较好的防除效果,结合苗高、叶长、根系和苗干重测定结果,推荐使用量为40～50mL/m2。

Fumigation trial with 32.7% metam-sodium was conducted to control damping-off of Capsicum Caused by Pythium aphanidermatum （Edson） Fitzpatrick and the weeds on seedbed. The seedbeds were fumigated at the doses of 50 mL/m^2, 40 mL/m^2 and 30 mL/m^2, and the 32.7% AS metam-sodium produced a control effect of 91.67%, 86.11%, and 77.78% on damping-off of capsicum respectively, and of 81.82% and 68.77% and 51.78% on weeds separately. According to the plant height, leaf length, roots and plant dry weight determined, the application close recommended is 40-50 mL/m^2.