瓜类枯萎病，茄子、番茄等黄萎病、枯萎病，姜瘟，各种蔬菜根结线虫病等多 种 土传病害，对蔬菜为害严重，一直是蔬菜优质高产的重要障碍，严重制约了菜农的经济效益 。对这些土传病害的防治尚缺乏安全、有效的药剂。本刊曾介绍的溴甲烷土壤重蒸剂，虽防 效好，但非长远发展使用的品种，且成本较高。本期刊出应用熏蒸剂氯化苦处理土壤防治蔬 菜土传病害的文章，介绍了应用大连染料化工有限公司生产的氯化苦处理土壤防治西瓜、甜 瓜枯萎病及姜瘟的方法和效果，供预防各种土传病害时参考。氯化苦是一种高毒熏蒸杀虫剂 ，其气体为三氯硝基甲烷，易挥发，但在蔬菜中无残毒，在充分散气后再定植，对蔬菜生长 无药害。日本等国早已应用于土壤熏蒸，防治蔬菜等作物的土传病害，并在生产中大面积推 广。大连染料化工有限公司近年还与辽宁、山东等省有关单位协作，做了氯化苦防治各种蔬 菜土传病害的试验、示范，都取得了较好的防治效果和经济效益。但应当指出：使用氯化苦 熏蒸土壤防治各种蔬菜的土传病害，必须使用专用的施药器具，严格按施药要求操作，才能 达到安全、高效的目的。 Fusarium wilt, eggplant, tomato and other Verticillium wilt, ginger blight, a variety of vegetable root-knot nematode disease and other soil-borne diseases, serious damage to vegetables, vegetables have been an important obstacle to high quality and yield, severely restricted Economic benefits of vegetable farmers. The prevention and treatment of these soil-borne diseases is still lack of safe and effective agents. This publication has introduced methyl bromide soil re-steaming agent, although good control effect, but non-long-term development and use of varieties, and higher cost. In this issue, an article about the application of chloropicrin as fumigation agent in the soil prevention and control of soil-borne diseases of vegetables was introduced. The methods and effects of applying chloropicrin produced by Dalian Dye Chemicals Co., Ltd. to control soil watermelon, melon wilt and ginger blast for prevention When a variety of soil-borne disease reference. Chloropicrin is a highly toxic fumigation insecticide, the gas is trichloronitromethane, volatile, but no residue in vegetables, after full of air and then planted on the growth of vegetables without phytotoxicity. Japan and other countries have long been used in soil fumigation, prevention and control of vegetables and other crops soil-borne diseases, and large-scale production in the promotion. In recent years, Dalian Dye Chemicals Co., Ltd. has also cooperated with relevant agencies in Liaoning and Shandong provinces to make tests and demonstrations of chloropicrin against various soil-borne diseases of vegetables. Both have achieved good control effects and economic benefits. However, it should be pointed out that the use of chloropicrin fumigated soils to prevent and control soil-borne diseases of various vegetables requires the use of dedicated applicators and operation in strict accordance with the application requirements in order to achieve safe and efficient purposes.