Quick killing of bismuth (quinclorac): In the 300 days after the application of fast killing, no crops can be planted except for rice. Eggplant and tobacco cannot be planted within 12 months, and tomatoes and carrots cannot be planted within 2 years. In addition, umbelliferous crops such as carrots, celery, and cilantro are very sensitive to fast killing, and it is not possible to water the above crops with the water of the paddy fields that have been killed. Chlorsulfuron-methyl: It has a long retention period in the soil, and it is not suitable to grow beets, rice, potatoes, melons, vegetables, sorghum and cotton. Sike (Metazine, oxalofenone): According to the experiment, the active ingredient of 420-1120 g per hectare (15 mu) can be used to grow alfalfa, asparagus, wheat, barley, corn and potato after 4 months. Sweet potatoes, sugar cane, soybeans, grasses and pastures; rice and cotton can be planted after 8 months, and Other crops other than roots can be planted for 12 months. At present, it is generally recommended that the dosage of Sike is 210-560 grams per hectare of active ingredient, which is generally safe for the crop after harvest. Guanglingling: It is reported that per turf (15 mu) can be planted with rice, cotton, corn, pepper, tobacco and cucurbit crops for 9 months after application of 560-1400 g of active ingredient; 16 months later All crops can be grown. At present, it is generally recommended that the amount of chlorhexidine used in combination with other drugs has no effect on the sorghum crop, but heavy spray has a slight effect on wheat. Puschte: a long-lasting herbicide . According to reports, 70 grams of active ingredient per hectare can be used to grow wheat, peas and alfalfa in 4 months after application; barley and tobacco can be planted after 9 and a half months; corn, cotton, potato and sorghum can be grown after 18 months. Beet can be grown after 40 months. Broad grass clear: Degraded quickly in alkaline soils and degraded slowly in acidic soils. For example, beet, rapeseed and cotton should be planted on the field of applying broad grass and must be separated by more than two years. More pesticide knowledge , please pay attention to China Pesticide Network Preservatives are a class of food additives that inhibit microbial activity and prevent food spoilage. In order for food to have a certain shelf life, certain measures must be taken to prevent microbial infection and reproduction. Practice has proven that the use of preservatives is one of the most economical, effective and simple ways to achieve the above objectives. Preservative Ferric Pyrophosphate Powder,Anti-Mold Preservative,Glucose Pentaacetate Powder,Professional Preservative Jinan Huijinchuan Chemical Industry Co., Ltd. , https://www.hjcchemical.com
The Preservative principle of preservatives is roughly as follows:
First, it is an enzyme system that interferes with microorganisms, destroying its normal metabolism and inhibiting the activity of enzymes.
Second, it is to coagulate and denature proteins of microorganisms, and interfere with their survival and reproduction.
Third, it is to change the permeability of the cell serosa, inhibit the elimination of enzymes and metabolites in the body, leading to its inactivation.