Our Heterocyclic Compounds has been developing from 2015 year, it is a relatively new class of compounds in our company. Our heterocyclic compounds conducted by a dedicated research and development teams. The R & D team focused on researching heterocyclic compounds, other products are performed by other technical team. Our goal is to catch up with the industry's professional heterocyclic manufacturer. At present our products are mainly composed of pyridine, pyrimidine, thiazole. In addition to our regular products, we accept any form of customized services, to undertake from grams to tons of production. After receiving inquiry, we will give a quotation within 2 working days with coa specifications,If you have special requirements, please provide details in the mail, we will combine the specific requirements and provide an accurate accounting of the costs of the offer. Under normal circumstances, we have the longest production cycle is not more than 45 days. Heterocyclic Compounds Heterocyclic Compounds,Cyclopropanecarboxylic Acid,Benzenedithiol Dihydrochloride Taizhou Volsen Chemical Co., Ltd. , http://www.volsenchem.com
Preserving leaf measures Immediately after fruit harvesting, foliar application of nutrient solution, with 1 g of 2,4-D plus 50 kg of water per acre, plus 0.3% of urea and 0.3% of potassium dihydrogen phosphate, 10 ~ 15 days once, 2 or 3 times in a row.
Prevention and control of pests, prevention and control. Pear leaf spot, streak disease, gray spot disease, rust disease, black spot disease, etc. can cause defoliation, and can be sprayed with 70% thiophanate-methyl wettable powder 800 to 1000 times, once every 10 to 15 days, and always use 2 to 3 times. Times. The pests are mainly locusts, pears, crickets, beetles, etc., and can be trapped and killed by frequency-vibration insecticidal lamps. Electric lights of 100-200 watts can be installed in places convenient to the power supply. A large box is placed at a distance of 40 cm from the bulb. The appropriate amount of water and put a small amount of oil (vegetable or kerosene) and insecticides, open the lamp at night to trap the pests. Drug control can also be carried out.
Pear tree post-harvest management methods and techniques
The management of the fertilizer and water is to shallow cultivating the soil within the canopy drip line, and the proper deep turning outside the canopy makes the entire garden loose and air-permeable. Each plant is roasted with fine quality farmyard fertilizer 20-30 kg, phosphorus pentoxide 0.25-0.5 kg, and potassium oxide 0.5 kg. Go ahead and open a fertilization ditch on both sides of the canopy outside the canopy, with a ditch depth of 40 cm and a width of 40 cm. Mix the fertilizer with the surface mellow soil and apply it. Cover the soil. The key to water management is drought resistance and drainage. It is recommended to use weeds to cover tree trays with a thickness of 10 cm and compact them with fine soil. The neck of the tree is opened when covered.