根际环境对“多肽保”在烟草上的应用效果研究

Research on Application Effect of Rhizosphere Environment to DMP in Tobacco Fields

为在烟叶生产上更好的应用植物有机诱导抗病剂＂多肽保＂,降低其使用成本,实现效益最大化.2014年,在温室条件下开展砂土、壤土两组盆栽试验,3次重复,完全随机区组设计.结果表明：1）土壤水分是＂多肽保＂能够发挥效果的基础保障,无论壤土还是砂土,只要土壤水分适宜均能发挥出较好的效果.2）＂多肽保＂对花叶病的防效优于黑胫病,同等气候条件下,要让＂多肽保＂发挥同等效果,则总用水量以砂土多于壤土为宜.3）＂多肽保＂施用量不是越多越好,烤烟品种＂红花大金元＂施用量在0.5~1.5 g/株范围内,对病害防控和改善农艺性状上均会产生较好效果,其中花叶病、茎围和叶长指标与用量呈正相关,株高、叶数与用量无明显相关性.

In order to get the better use of plant organic disease elicitor,Dry mycelium of Penicillium chrysogenum（ DMP,with commercial name as Duotaibao）,and reduce the cost to achieve maximum efficiency,the random tests with three replications were carried out using sandy soil and doras in greenhouse. The result showed that water content was crucial for DMP to be effective,regardless of doras or sand,as long as there is suitable soil water content. The protective effect of tobacco mosaic virus is better than the protective effect of black shank. Under the same climatic conditions,to achieve the same effect of DMP,the water content of sandy soil is higher than that in the doras. The dosage of DMP is not the more,the better. The best dosage on＂Honghuadajinyuan＂is 0. 5—1. 5 g DMP / Plant. This concentration of DMP can achieve better control and improve the agronomic traits,in which mosaic disease,leaf length and girth index were positively correlated with using dosage,while plant height and leaf number has no significant correlation with using dosage.