Water slurry, chase slurry fertilizer Filling stage is the final stage of wheat grain yield and has an important impact on wheat yield. This period has more demand for water, which can be combined with irrigation, topdressing urea 3-5 kg ​​per mu. Whether irrigation and topdressing during grain filling should also be determined based on a variety of factors. If there is a rainfall with a rainfall of 20 mm or more during the grain filling period, no slurry can be poured. If the precipitation during the grain filling period is small, slurry can be poured. Groups that are large, overgrowth, and lands that are at risk of lodging do not pour slurry water and do not top-dress. Spray fertilizer, anti-dry hot wind In the late growth stage of wheat, the absorption capacity of the roots is weakened, and foliar dressing can prolong the functional period of wheat leaves, increase photosynthesis, prevent disease and lodging, and mitigate the damage of dry hot wind. Use 0.4% potassium dihydrogen phosphate plus 2%~3% urea mixture, or add other ecological active fertilizer for foliar spray. Interval sprayed once every 7 days to increase the grain weight and optimize the quality. Pest control The filling period of wheat is a peak period for the occurrence of various pests and diseases, and it is also a critical period for increasing the 1000-grain weight of wheat. In this period, the main control subjects were wheat stubble and wheat powdery mildew, rust, scab, and leaf blight. Grasp the key period of disease prevention and pest control in early April and early May. For wheat head blight, we must adhere to the “active attack†and unswervingly implement the prevention and control measures. For locusts, we must effectively implement the “moving at the gate and controlling the pressureâ€. After ", the following formulations can be used for pest control: 1. 70% imidacloprid wettable powder 3 ~ 5g + 4.5% beta-cypermethrin EC 80ml + 45% Benzochlor 25g +98% Potassium dihydrogen phosphate 100g + 0.01% Brassinolide 8ml . 2, with 50% nitenpyrazine wettable powder 8 ~ 10g + 4.5% beta-cypermethrin EC 80ml + 25% benziconazole EC 30mL +98% potassium dihydrogen phosphate 100g + 0.01% brassin Lactone 8 ml. 3. Use 2.5% bifenthrin water emulsion 80 ml + 48% cyanogen tebuconazole suspension 10 ml + 98% potassium dihydrogen phosphate 100 g. The above formulas are mainly used to control aphids and powdery mildews, as well as to combat midge, scab, rust, leaf blight, and dry hot wind. In addition, grassy weeds should also be removed in a timely manner. Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone
Intermediate – Intermediate: A material produced during a drug substance processing step that must undergo further molecular modification or refinement to become a drug substance. Intermediates may or may not be isolated. Intermediates are the key products of the previous process of making APIs, which are different in structure from APIs.
Ceftriaxone sodium powder is called preparation, sterile ceftriaxone sodium is called API, and 7-ACA is called intermediate.
Our company specializes in providing key intermediates for various APIs
Intermediate is a very important type of fine chemical products. Its essence is a type of "semi-finished product", which is an intermediate product in the production of certain products. For example, if a product is to be produced, it can be produced from intermediates, saving costs and reducing It is widely used in the synthesis of medicines, pesticides, coatings, dyes and spices. In the field of medicine, intermediates are an important link in the industrial chain of the pharmaceutical industry. They are used for some chemical raw materials or chemical products in the process of drug synthesis. In a word, they are used to produce APIs.
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for example:
Amoxicillin capsules are called preparations, amoxicillin is called API, and 6-APA is called intermediate.
Wheat from flowering and fertilization to grain maturation generally takes 30-40 days, which is the last critical period for the formation of wheat yield. It is the main period for accumulating storage nutrients. 80%-90% of carbohydrates in grains are photosynthesis after wheat flowering. The 90% of the nitrogen in the grains is transferred from the stems and leaves to the grains. Therefore, it is very important to protect roots and protect leaves, delay leaf senescence, promote grain filling, increase grain weight, increase yield, and achieve high and stable yields. necessary. Pay attention to the following tasks: