There are many types of weeds in mulberry fields, and they have fast reproduction and strong regeneration ability. They compete with mulberry trees for water and nutrients, affecting the ventilation and ventilation of mulberry trees, inhibiting the growth of mulberry trees, and reducing the yield of mulberry leaves. They are also the media for mulberry fields to breed pests and diseases. Therefore, in summer and autumn, we must seize the weeds in the mulberry field in time. First, manual weeding. Should master the summer in addition to Huangmei grass. Due to the high rainfall, high temperatures and sufficient light during this period, it is the most prosperous period for weeds in a year and should be removed in time. In addition to the knot grass, it means that the weeds should be removed before the flowering and seeding in the fall. This will not only reduce grass damage in the year, but also eliminate the spread of seeds and reduce the grass damage in the coming year. Second, mechanical weeding. It is mainly to use small tractors and other agricultural machinery to cultivate and weed in the mulberry field, which can greatly increase weeding efficiency. Interplant weeds can be destroyed by artificial and chemical herbicides. Third, chemical weeding. The main chemical herbicides that are suitable for mulberry weeding and their methods of use are: (1) Glyphosate, also known as Zhencao Ning, has broad spectrum, low toxicity, and high efficiency. Safe to mulberry and silkworms. For every 667 square meters (1 mu) of mulberry field, 1 kg of glyphosate containing 15% of active ingredient is added, 100 kg of water is added, and 0.2 kg of detergent is sprayed and mixed to spray lush weeds. (2) Diuron, which is a type of herbicide that conducts electricity in the mulberry field. Before the germination of mulberry weeds, 0.5 kg of wettable powder of 25% active ingredient per 667 square meters, 100 kg of water, and soil spray, can effectively prevent and control dicotyledons. grass. (3) dimethyl tetrachlorine, a hormone herbicide, can stimulate the destruction of carbohydrates and protein metabolism in weeds, hinder the formation of chlorophyll, and finally rot in the growth point to death. For every 667 square meters, use 20% of the active ingredient in 0.5 kg of water, add 100 kg of water and spray the weeds. (4) Withered grass, which is a type of herbicide with internal absorption, uses 1 kg of thatch per 667 square meters, adds 100 kg of water, and acts as a surface treatment agent or spraying weed stems and leaves. Fourth, ecological herbicide. The germination of weeds, like mulberry trees, requires not only sufficient water and nutrients. Also have plenty of air, temperature, light and other conditions. People use the characteristics of weeds to artificially create an ecological environment that is conducive to mulberry trees and unfavorable to the growth of weeds and achieves the purpose of weeding. The main ecological methods include: close planting, strengthening field management, planting soybean crops, covering the ground with garbage and sludge, etc., promoting the growth of mulberry trees, overwhelming weeds, maintaining a thick leaf curtain, causing ground cover, shade, and weeds are difficult to thrive. Growth can effectively inhibit the growth of weeds. Ecological weeding will not cause mulberry soil and environmental pollution.
Drug Intermediates
Drug intermediates are compounds that are formed during the synthesis of a pharmaceutical drug include API intermediates,chemical intermediates,medicine intermediates . They are the intermediate products that are used to create the final drug product. These intermediates are usually organic compounds that have specific chemical properties and structures that are necessary for the synthesis of the drug. The synthesis of drug intermediates involves a series of chemical reactions and purification steps that are carefully controlled to ensure the purity and quality of the final product. The drug intermediates are then further processed to create the final drug product that is used for medical treatment.Our main intermediates are 3,3′-Diindolylmethane,2,3,4,5-Tetrafluorobenzoic acid,
2, 6-Difluorobenzamide,2, 6-Difluorobenzoic Acid.China Drug intermediates,API intermediates manufacturers, welcome chemical intermediates,medicine intermediates purchasers from worldwide to visit our site to learn more.
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