蚕豆的病虫害防治,除了选用抗病品种,合理密植和整枝,搞好防旱排渍,增施磷钾肥,增强蚕豆抗性外,药剂防治也是很必要的。 1.赤斑病:叶片上先生出赤色小点,渐扩大成圆形或椭圆形病斑,严重时各部位均变成黑色、枯腐。茎杆内壁有黑色菌核。药剂防治:在发病初期,喷施1:2:100的波尔多液。以后,每隔10天,喷50%多菌灵500倍液1次。连喷2～3次。实践证 Vicia faba pest control, in addition to the selection of resistant varieties, close planting and pruning reasonable, do a good job drought row of discharge, the increase of phosphorus and potassium, and enhance resistance of broad bean, the chemical control is also very necessary. 1. Red spot: Mr. leaves a small red dot, gradually enlarged into a round or oval lesions, severe parts of each become black, dry rot. Stalk wall with black sclerotia. Pharmacy control: early onset, spraying 1: 2: 100 Bordeaux mixture. Later, every 10 days, spray 50% carbendazim 500 times 1 times. Even spray 2 to 3 times. Practice certificate