土壤驱虫剂在高山区生姜连作中的应用

Soil Insect Repellant against Plant Diseases and Insect Pests with Ginger Continuous Cropping in Alpine Region

为了促进高山区生姜产业的稳步发展,以课题组研制的土壤驱虫剂为材料,在郴州市北湖区石盖塘新屋村百亩生姜高产示范片进行了田间药效试验。结果表明:土壤驱虫剂既能调理土壤营养平衡,增加土壤中的微量元素含量,满足生姜对硅、锌、硼等元素的需要,又能抑制生姜病害、驱避虫害。当土壤驱虫剂施用量为50 kg/667m2时,对姜瘟等生姜主要病害的防效69.56%~90.94%,对小地老虎和姜螟的防效达100%;同时,施用土壤驱虫剂后,生姜表现脆嫩、辛辣、口感好,鲜姜产量比对照增加813 kg/667m2,增产幅度达32.24%。综合情况表明土壤驱虫剂可在同生态地区大面积推广运用。

The feld effcacy test was conducted with a soil insect repellant developed by the research group in the 6.67-hm2 ginger high-yield demonstration area at Xinwu Village of Chenzhou City to improve the ginger industry in the alpine region. The results indicate that the soil repellant can simultaneously regulate soil nutrient balance in high altitude area, increase the content of trace elements in soil, meet the need of ginger for elements such as Si, Zn and B, prevent and control ginger main diseases and insect pests, and improve ginger’s quality and yield. The highest prevention effect on ginger bacterial wilt, leaf blight and anthracnose can reach 90.76%, 90.94% and 100%, respectively; and 170 d later, it still can reach 66.60%, 66.91% and 64.91%, respectively. The prevention effect on black cutworm and ginger worm can reach 100%. All the treated ginger’s quality is better than the CK, increasing the yield by 32.24%. This soil insect repellant can be applied widely in the same ecological areas.