吉林省向日葵列当防治药剂筛选

Selection of Chemicals Against Sunflower Broomrape in Jilin Province

为了筛选适宜药剂,有效控制向日葵田中列当的危害,以当地较受欢迎的地方品种白葵花为试材,采用随机区组设计,根据寄生性杂草列当在向日葵田中的发生特点选用7种不同的除草剂或除草剂组合,对向日葵田进行处理,研究其防治效果。结果表明:各处理均能有效防治列当、减少因列当发生而造成的产量损失,同时对向日葵安全。其中48%氟乐灵和33%二甲戊灵挽回产量损失率分别达到30.52%和25.00%,可在封垄前的土壤中施用。

In order to select the suitable chemicals to control the harm of sunflower broomrape effectively,taking white sunflower variety as material,through the randomized block design,the sunflower field were treated by different weed killer or weed killer group in specific treatment method and time in line according to the occurrence characteristics of the broomrape in sunflower field.The results showed that every treatment played an important role in controlling broomrape effectively,and could reduce yield loss of sunflower by broomrape,nonmalfeasance to sunflower.It showed that yield loss rate saved by 48%trifluralin and 33% pendimethalin were30.52% and 25.00%,could be employed in the soil before the latest ridging cultivation for rows.