For plots intended to grow eggplant, pepper, cabbage, radish, kale, cabbage, if used before, imidazolium nicotinic acid must be planted at intervals of 40 months; used chlorsulfuron-methyl must be planted at intervals of 36 months; Long, the active ingredient per hectare is more than 60 grams, that is, 4% nicosulfuron is more than 100 ml per mu, and must be planted at intervals of 18 months; used oxasulfuron, the active ingredient per hectare is 48-60 grams, ie 80% sulfasalizate 3.2-4 grams per mu, must be planted at intervals of 26 months; used flufenacetate, 375 grams of active ingredient per hectare, ie 25% sulfamethoxazole 100 ml per mu, must be separated 18 months of planting; used metsulfuron-methyl, the active ingredient per hectare is more than 7.5 grams, must be planted at intervals of 24 months; used isoxazolone, the active ingredient per hectare is more than 71 grams, must be planted at intervals of 18 months Used simazine, the active ingredient per hectare is more than 2.24 kilograms, that is, 50% simazine is more than 300 grams per acre, and must be planted at intervals of 24 months; after using atrazine, the active ingredient per hectare is more than two kilograms. That is, 38% of atrazine is used in an amount of more than 350 ml per mu. In addition, the former sputum used quinclorac, the effective ingredient per hectare is 106-177 grams, must be separated by 24 months to grow pepper, eggplant, radish; the former sputum used oxazinone, the active ingredient per hectare is 350-700 grams That is, 70% of oxazinone is 33-67 grams per acre, and radish must be separated by 18 months. For the plots where the potato is intended to be planted, the former sputum should be planted at intervals of 36 months; the chlorsulfuron should be planted at intervals of 40 months; the nicosulfuron is used, and the amount of the active ingredient is more than 60 grams per hectare. , that is, 4% nicosulfuron is more than 100 ml per mu, and must be planted at intervals of 18 months; used oxasulfuron, the active ingredient per hectare is 48-60 g, that is, 80% sulfasalazine per acre 3.2 -4g, must be planted at intervals of 12 months; used flufenacetate, 375 grams of active ingredient per hectare, ie 25% sulfamethoxazole 100 ml per mu, must be planted at intervals of 24 months; used metsulfuron-methyl The active ingredient per hectare is more than 7.5 grams and must be planted at intervals of 34 months. The used active ingredient of simazine is more than 2.24 kilograms per hectare, that is, 50% simazine is more than 300 grams per acre, and must be planted at intervals of 24 months. Used atrazine, the active ingredient per hectare is more than two kilograms, that is, 38% atrazine is more than 350 ml per acre, and must be planted at intervals of 24 months; chlorsulfuron is used, and the active ingredient per hectare is 15 grams. Planted at intervals of 24 months; used quinclorac, per hectare The active ingredient is 106-177 grams and must be planted at intervals of 24 months. Galvanized Wire,Galvanized Iron Wire,Electro Galvanized Iron Wire County Shengxin Metal Products Co., Limited , http://www.hbwire-mesh.com