除草剂与除草膜配合使用对烟田杂草的防除效果

Control Effects of Herbicide and Mulch on Weeds in Tobacco Field

为了筛选适合烟田使用的高效除草措施,选用29%精喹异恶松乳油、50%仲灵异恶松乳油、720 g/L异丙甲草胺乳油、50%敌草胺可湿性粉剂和50%砜嘧磺隆水分散粒剂等5种除草剂分别对烟田杂草进行化学防除试验,筛选出防除效果最佳的除草剂后,进行黑色地膜和白色地膜与除草剂结合使用的杂草防除试验。结果表明,药后30 d和45 d,对烟田总草防除效果最好的除草剂均为50%仲灵异恶松乳油,其对烟田杂草株数总防效分别是89.57%和72.96%,鲜质量总防效分别为92.88%和74.36%。5种除草剂对烟田总草株数和鲜质量的防除效果一致,均表现为仲灵异恶松>砜嘧磺隆>敌草胺>精喹异恶松>异丙甲草胺。除草膜与除草剂综合防治试验结果表明,施药后30 d和45 d,对烟田总草防除效果最好的处理均是仲灵异恶松+黑色地膜,株数总防效分别是98.14%和94.03%,鲜质量总防效分别是93.92%和91.93%。5种防控措施对烟田总草株数和鲜质量的防除效果一致,均表现为仲灵异恶松+黑色地膜>黑色地膜>仲灵异恶松+白色地膜>仲灵异恶松>白色地膜。综上,黑色地膜对烟田杂草株数和鲜质量的防除效果很好,其与仲灵异恶松结合使用后防除效果更佳。

In order to select highly effective weeds prevention and control technology for tobacco fields ,a chemical control experiment on weeds was conducted with five kinds of herbicides （50% Butralin clomazone,50% Rimsulfuron, 50% Napropamide, 29% Quizalofop-p-ethyl clomazone and 720 g/L Metola- chlor） to select the best herbicide, and then a integrated control experiment of black fi lm, white film and the best herbicide was conducted. In the chemical experiment,50% Butralin clomazone showed the best weed control effect after 30 days and 45 days. The control effects on total weed number and fresh weight respectively were 89. 57% ,72. 96% and 92. 88% ,74. 36% under the treatment of 50% Butralin cloma-zone. Both control effects on total weed number and fresh weight of five herbicides showed similar as Bu-tralin clomazone 〉 Rimsulfuron 〉 Napropamide 〉 Quizalofop-p-ethyl clomazone 〉 Metolachlor. In the com-binational experiment, black mulch ＋ Butralin clomazone showed the best control effects on total weed number and fresh weight ,98. 14% ,94. 03% , and 93. 92% ,91.93% respectively after 30 days and 45 days. Both control effects on total weed number and fresh weight of five treatments showed similar as Bu-tralin clomazone ＋ black film 〉 black film 〉 Butralin clomazone ＋ while film 〉 Butralin clomazone 〉 while film. Black mulch showed a significant control effect on weed number and fresh weight in tobacco fields,when combined with Butralin clomazone, the control effect got better.