Why is the Field Covered with Weeds and Weeds Still Overgrown?

With the current severe shortage of rural labor force, the use of plastic film covering and chemical weeding technology has been increasingly recognized by the majority of farmers, especially large planters. Because the implementation of plastic film covering crop cultivation, can not only keep warm, protect the earthworms, preserve fertilizer, but also save a lot of labor, especially in the cultivation of dryland crops such as cotton, corn, watermelon, potato, soybean, etc., applied cover cultivation chemical weeding. The scene abounds.

The cultivation of agricultural crops covered with film has an increasingly large area due to the good ecological effects. However, when the author surveyed rural areas, he often saw some fields covered with film crops, sometimes weeds accompany, some weeds grew even more than the uncovered land, and serious sites would The covered film is pierced into holes. Why does it cover the plastic film and it promotes weed growth? In view of the situation of on-site inspections in various places, there are several common mistakes: First, in the process of spraying chemical herbicides, farmers inadvertently used their feet to break the film layer after application, resulting in breaks in the drug. Some layers of the soil lose the function of weeding; Second, the spraying is not uniform enough, or some areas are sprayed with chemical herbicides; Third, the soil in the field is not the same, the sensation is not the same, and the poor weeding effect is poor; When the film is covered, it accidentally breaks the film layer, or the film is not tight, or it is struck by wind and other external forces, so that the damaged plastic film is lost.

In order to improve the comprehensive effects of the cover film and chemical weed control, we must create a good ecological condition, lay a good foundation for film-covering and weed control, and strictly control the operation technology of film-mulching.

First of all, it is necessary to fine-tune the land and Daejeon has an appropriate atmosphere. For Daejeon where crops are to be cultivated and cultivated, it is necessary to rob more than two times for site preparation in advance. Excessive soil erosion will affect the quality of the coating film and it will be difficult for the lyrical sensation to show its effect. Therefore, the land preparation must be completed to the formation of the land, the virtual reality, the moderate sensation. Only in this way can we help the weeding and filming.

Second, we must prepare herbicide varieties. If weeding in the cotton field, the following herbicides are available: 72% Dole EC 100-150 ml per mu, or 15% fine stable kill EC 50-60 ml, or 12.5% ​​Nicorin EC 40- 60 ml, or 12.5% ​​take flutter net 60 ~ 100 ml respectively diluted with 30 to 40 kg spray. Or use 48% cable, or use 48% trifluralin 150 ~ 200 ml, respectively, watered 50 kg of cotton field soil spraying. Since trifluralin is volatile, it should be applied to the soil with a gum when applying the herbicide. The herbicide efficacy is above 95%. Such as corn field weeding, can choose to use 35% atrazine suspension agent 300 ~ 400 ml, or acetochlor EC 120 ~ 250 ml, or 40% Ethyl Suspension 300 ~ 400 ml, respectively, watered 30 to 40 kg, Corn field soil was sprayed.

Third, pay attention to improving the quality of the coating film. First, there should be sufficient lyrical application of pesticides in Datian to facilitate the penetration of the liquid into the soil as quickly as possible. Second, when the pesticide is applied, people can walk in the ditch. When the manual operation of the wagon is wide, the spray can be applied in a retractive manner to avoid breaking the film layer. . To achieve uniform application, no spray or heavy spray; Third, side spray coated film. After covering the plastic film, it is necessary to inspect it carefully and find that it is necessary to promptly replace the lid or film.

Active Pharmaceutical Ingredient (API)

Active Pharmaceutical Ingredient (API)

We are a manufacturer and supplier of raw materials, intermediates for pharmaceuticals, as well as Active Pharmaceutical Ingredient (API). Our focus is on providing customers with high quality, fair priced products, coupled with our broad range of technical know-hows on fundamentals, vast industrial experience on applications, professional expertise on health and safety, and efficient logistics on customer services. We have established good market for our intermediates in India, Korea and EU. Besides of their intermediates, we can also synthetize the API directly. We also have some API by fermentation, Polymyxin B Sulfate is one of them and we are developing more APIs as well.

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