It’s time to plant autumn cabbage. It’s the best time for cabbage to grow 3-5 days before and after the fall, but it’s very hot this summer, so many areas will postpone the cultivation of Chinese cabbage until mid-August. Chinese cabbage should be no stranger to friends in the north, and many Chinese cabbages grown in the fall will fall into the winter. Therefore, it is also possible for many growers to harvest corn and then plant autumn cabbage. However, although cabbage cultivation is simple, if you want to produce high yields, you should pay attention to some planting techniques. First, the soil for planting cabbage The roots of Chinese cabbage are very shallow, so you should choose soil with high water retention capacity. Cabbage seeds are very small. In order to ensure the emergence rate of cabbage, the soil is required to be flat and the soil layer is loose, so that the roots of cabbage can better absorb nutrients. Second, fertilizer Cabbage has a long growing season and needs sufficient nutrients for rapid growth. Therefore, it is necessary to apply sufficient fertilizer before planting cabbage. The base fertilizer is generally based on fully decomposed farmyard manure, plus an appropriate amount of fertilizer. During the growth of Chinese cabbage, it is necessary to topdress and irrigate according to the growth characteristics of Chinese cabbage. Third, and time seedlings If it is live, it is necessary to carry out the seedlings when the cabbage grows 2-3 true leaves and 5-6 true leaves. The final plant spacing is 10-12 cm. When the seedlings are in contact, the slow-growing weak plants and the diseased plants can be removed together, the excessive nutrient consumption is reduced, and the cabbage is better promoted. Fourth, prevent pests and diseases The common pests and diseases of Chinese cabbage are downy mildew, black spot, aphids and cabbage caterpillars. In the initial stage of cabbage disease, it is necessary to spray medicine in time to prevent the spread of germs. In the early stage of pest isolation, the insecticide is used in time for prevention and control. After the cabbage enters the ball-forming period, the pest control work will be hindered, so it is necessary to kill the pest before the ball is formed. Fifth, timely harvest Cabbage harvest is too early to produce low yield, and it is prone to frost damage after harvesting too late. Therefore, it is generally harvested according to the change of weather before the snowfall in winter. Generally, the harvested cabbage should be dried in the field for 2-3 days, which is conducive to the storage of cabbage. The above is the key points of high-yield planting techniques of Chinese cabbage compiled by Huinong. The cultivation of Chinese cabbage is not difficult. I believe that everyone will have a good harvest! An active substance is the main active ingredient in a drug. Take a simple aspirin for example. Acetyl salicylic acid is synthesized through chemical process and purified to a specified purity. The synthesis of acetyl salicylic acid is made by adding various excipients, such as fillers, adhesives, disintegrating agents, etc., and then pressing it into tablets. The production of apis is generally either pure chemical synthesis, biological fermentation, or semi-synthesis, with biological fermentation followed by extraction followed by synthesis. Not all pharmaceutical enterprises make API by themselves, and many manufacturers do not have the scale to produce API. Even if there is large-scale production, the cost of production may be much higher than that of procurement. Therefore, most manufacturers buy bulk drugs, and then make preparations, so that the production of drugs can be completed without a very large scale. At present, China and India have become the two largest API producers in the world. Many European and American pharmaceutical companies, even some of their own original drugs, will give up the production of API as the patent expires and the market matures, and turn to purchase apis from China and India,API production generally go through laboratory, generated through laboratory bottle container canister, taking after successful, pilot magnification, which is to enlarge the quantity of the production, then no problem tends to be faced with a lot of small scale experiment, a very simple example, the heating process, due to the relatively small amount in the laboratory, uneven heating cases is less, But if it is scaled up to a few tons of pot, at this time the heating may be not hot in this place, where the paste pot, at this time you need to stir, but the speed of mixing is appropriate, this process needs to calculate or grope. Finally from the pilot test, and then to the formal production, the volume of further amplification, and will face a lot of new problems. Therefore, although some drugs are generic, the research and development of the whole process from small test, pilot test to the final mass production is indispensable, so even generic drugs have very high research and development costs. api meaning,api products to buy,best api products,cheap api products,best buy products api,best api products Shaanxi YXchuang Biotechnology Co., Ltd , https://www.peptidenootropics.com