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在烟叶生产中,打顶抹芽是提高烟叶质量的一个关键性措施。由于人工抹芽费时费工效率低、且极易传染烟草病毒病。近年日益重视化学腋芽抑制剂的研究应用,国内开始引进一些进口烟草抑芽剂。为了比较不同抑芽剂的抑芽效果、探索适宜我省具体情况的施用技术,1991年我们在叙永、会理及西昌等地烟区对瑞士汽巴嘉基公司出品的抑芽敏与美国氰胺公司出品的除草通进行了多点小区对比试验。供试药剂为25％抑草敏乳油(供试浓度700倍)及33％除草通乳剂(供试浓度100倍),小区而积0.1亩,随机区组设计,各处理重复三次,以人工打顶抹芽为对照在全田烟株90％以上进入花蕾伸长期时打项施药,施药后第3、7、15天进行三次抑芽率调查,烟叶成熟后,各小区单独采收烘烤及分级扎把,按国家标准验收称重并统计产量、亩产值与上中等烟比例。现将各点试验结果综述如下:
In the production of tobacco, topping bud is to improve the quality of tobacco is a key measure. Because of the time-consuming and labor-saving manual wiping efficiency is low, and extremely easy to transmit tobacco virus disease. In recent years, increasing emphasis on chemical axillary bud suppressant research and application, the domestic began to introduce some imported tobacco bud suppressant. In order to compare the inhibitory effect of different suppository agents and to explore suitable application techniques for the specific conditions in our province, in 1991 we controlled the production of sumac in the areas of Xuyong, Huili and Xichang, Cyanamid company produced weeding conducted multi-point cell contrast test. The test agent is 25% of the grass-sensitive EC (test concentration of 700 times) and 33% weed through the emulsion (test concentration of 100 times) plot 0.1 acres, randomized block design, the treatment repeated three times, Top bud for the control of tobacco in the whole plant more than 90% into the bud when the elongation of the project, spraying 3,7,15 days after the three times the rate of inhibition of germination, leaf tobacco maturity, the plot harvesting and drying alone Roasted and graded tie bar, according to the national standard acceptance and weighing output, the output value of mu and the proportion of upper secondary smoke. The results of each point are summarized below: