烟草根结线虫病防治药剂的田间筛选研究

摘要

通过田间试验,分析比较不同药剂(措施)处理对烤烟生长特性、产值、产量以及对根结线虫病发病情况的影响.结果表明,施用5％神农丹颗粒剂3 g/株+0.5％肯邦线尊颗粒剂3g/株,防效最好,相比于对照,平均防效为(74.52±6.57)％,烟叶产值和均价也最高,分别达到(3 2495±177.03)元/hm2和(12.89±0.11)元/kg.施用0.5％肯邦线尊颗粒剂防效次之,其平均防效在(66.87±7.84)％.施用腐熟农家肥烟叶产量最高,达到(2 979±210.72) kg/hm2.因此,增施有机肥,施用5％神农丹颗粒剂+0.5％肯邦线尊颗粒剂,是防治烟草根结线虫病,增加效益,促进烟草产业可持续发展的有效措施.%The effect of different pesticides on growth characteristics of tobacco was investigated and its yield and economic values and the incidence of root knot nematode situation from a field test in Gengma county, Lincang were compared. The results showed that, the effective method to control of tobacco root-knot nematodes disease was using 3 grams of 5% Shennongdan granules and 0. 5% Kenbanxianzun drug granules for each plant, which gained the highest control efficiency (74. 52% ), and the economic value and quality was about 32 495 Yuan/hm2; the average price was about 12. 89 Yuan/kg. A-mong our test, the treatment with 0. 5 % Kenbanxianzun drug granules had the preferable and its control efficiency was about 66. 87%. While the treatment with full-digested farmyard manures gained the highest yield ( 2 979 kg/hm2). Then, we concluded that, using 5% Shengnongdan granules and 0. 5% Kenbanxianzun drug granules appropriately with more organism fertilizer should be the optimal way to control of the root-knot nematode disease on the flue-cured tobacco. It was also useful to increase the economic yield and promote sustainable development of flue-cured tobacco.