预防蚕豆枯萎病蚕豆枯萎病是棉豆两熟地区蚕豆生长中、后期的主要病害。该病是病菌先侵人细根，细根尖端变黑，后侵人主根致使细根消失，主根干枯呈鼠尾状，很内维管束变为褐色或黑褐色。人春后，根系皮层被腐蚀，主根心匿变锈褐色。地上部分植株矮小，叶包淡绿至淡黄色，... Fusarium Wilt to prevent fusarium wilt Vicia faba is the main disease in mid and late stages of faba bean growth in cotton double cropping areas. The disease is the first to invade bacteria fine roots, fine roots tip black, after invasion of the main root root causes the disappearance of fine roots, the main roots of rat tail was dry, very vascular bundles into brown or dark brown. After the spring, the root cortex is corroded, the main root of the heart becomes rusty brown. Plant parts of the ground is short, leaves light green to pale yellow, ...