思茅松苗期立枯病防治技术研究

Prevention Technology of Rhizoctonia solani in Seedling Stage of Pinus khasys

在普洱市林业科学研究所苗圃开展几种药物防治思茅松苗期立枯病试验,采用L9(34)正交试验设计,4次重复,随机区组排列,研究基质、农药、农药的使用浓度对思茅松苗期立枯病的防治效果的影响,对试验结果进行方差分析、多重比较。结果表明,对防治思茅松苗期立枯病效果最佳的组合是:基质为思茅松林下菌根土+普钙(3%),农药种类为恶霉灵,农药的使用浓度为800倍液。

Prevention experiment of Rhizoctonia solani was carried out in nursery of Pu＇ er Forestry Sci- ence Institute, the effects of matrix, pesticides concentration on Rhizoctonia solani have also been studied by using L9 （3^4） orthogonal experimental design, four times repeated, randomized block. Through variance analysis and multiple comparisons, results showed that the best combination of prevention and treatment of Rhizoctonia solani were： matrix of mycorrhizal soil ＋ superphosphate （3%）, and pesticides types of hymexazol, pesticide concentration of 800 times.