农作物立枯病的克星——立枯灵

• 作 者: 佟亚洲
• 机 构: 吉林省长岭县农资公司 131500
• 出 处: 农村百事通
• 发表日期: 1998年05期
• 关键词: 农作物 作物幼苗 病株残体 折倒 时病 第二年 传染来源 根基 褐色 五氯硝基苯

立枯病是瓜类、蔬菜、粮食等许多农作物的多发病害,时常造成毁种、断苗、减产或绝收。立枯病菌可随病株残体在土壤中过冬,也可在腐殖质上腐生越冬,成为第二年的传染来源,侵害作物幼苗根基部,初为褐色或红褐色病斑,以后逐渐扩大凹陷细缩,形成绕茎一周的细线,使植株茎叶萎垂或折倒,严重时病部扩展延及根部,连根一起腐烂。立

Blight is a cucumber, vegetables, food and many other diseases of crops, often causing deforestation, cutting seedlings, cut or never harvest. Rhizoctonia solani can survive with the diseased plant debris in the soil, but also saprophytic winter over humus, becoming the source of infection in the second year, against the roots of crop seedlings, brown or reddish brown lesions at first, then gradually expand the sag Shrink, forming a thin line around the stem a week, so that plant leaves wither or fold down, severe extension of the extension of the diseased part of the roots, with the root decay. Stand