A large number of partial application of chemical fertilizers, with little or no organic fertilizer, can easily lead to lack of soil organic matter, resulting in soil compaction, reduced root absorption capacity, coupled with successive years of girdling and ring cutting, the operation of tree nutrients is hindered, the tree vigor is weak, and the leaves are thin Yellowing, roots appear "hungry" phenomenon, resulting in bitter pit disease and other physiological diseases; calcium, nitrogen imbalance, the occurrence of water heart disease, tiger skin disease. Second, the implementation of orchard grass Water conservation, fertility and fertility, enhance the tree's resistance to stress; or strengthen the supporting construction of orchard water conservancy facilities to ensure that the apple growth period can be flood irrigation, flood control can row. Third, reasonable trim Pay attention to local conditions, choose a reasonable tree shape, and create a ventilation and light-transmitting condition conducive to the growth of fruit trees and the development of fruit trees through pruning, reduce the incidence of diseases and pests, and increase the fruit product rate. Fourth, attach importance to the application of trace elements It is very important to top-dress the young fruit during cell division and fruit enlargement. Careful use of ferrous sulfate and copper sulfate during the young fruit stage, careful use of zinc sulfate, poor quality potassium dihydrogen phosphate, and potassium dihydrogen phosphate (some contain irritant Ammonium bicarbonate) so as not to stimulate the fruit surface, causing invisible fat damage. Fifth, rational use of drugs In the young fruit period, it is necessary to pay attention to the selection of high quality and effective insecticidal fungicides, and must not use agents containing heavy metal ions to prevent contamination and damage to the fruit surface. Before bagging apples, carefully spray sulphur preparations, such as homemade compound mancozeb containing sulphur, etc.; careful spray Fumei Shuang and its compound preparation; cautiously spray Bordeaux and other copper preparations; prudently spray poor quality of EC pesticides, especially Some organophosphorus insecticides; spray carefully on the surface of the fruit surface corrosive inferior penetrant and synergist. It is recommended to use advanced formulations such as suspension agents, water agents and other insecticides. Sixth, promote the use of high quality fruit bags First of all, pay attention to the specification of the paper bag. If it is too large or too small, it is not appropriate. A paper bag with a width of 15 cm and a height of 19.5 to 20 cm is appropriate. Secondly, the quality of the paper bag should be selected, a registered trademark should be used, the workmanship must be fine, and the vent hole must be Moderately, the inner bag of wax is good, the outer bag is resistant to water and has good shading, and the paper is soft and breathable. Finally, to select high-quality double-layer paper bags, only double-quality paper bags can set high-quality high-grade apples. Seven, watering as appropriate In drought-stricken areas or in years with less rainfall, attention should be paid to watering before and after flowering, before and after bagging, and before and after unbagging. Before apples are bagged and before bagging, water should be poured one by one to prevent daily bagging or to reduce baggage sunburn. Eighth, scientific work, maintain the tree potential Traditional techniques of “engraving, stripping, and pulling†promote flower blossoms, and most of them are methods of weakening tree vigor. Some of them are not adapted to the requirements of modern fruit production. In particular, improper girdling can easily result in debilitating trees and even dead trees. In the orchard circumcision year after year, the fruit surface quality of bagged fruit was generally reduced, and black and red spots were increased, and cleft palate was severe. Imported Premium Coupling Reagent In plastic mixing, a plastic additive that improves the interfacial properties of a synthetic resin with an inorganic filler or reinforcer. Also known as surface modifier. It can reduce the viscosity of the synthetic resin melt and improve the dispersion of the filler to improve the processing performance in the process of plastic processing, so that the product can obtain good surface quality and mechanical, thermal and electrical properties. Imported Premium Coupling Reagent,Premium Silane Coupling Agent,Premium Titanate Coupling Agent,Union Carbide Silane Coupling Agent Xingbang High Molecular Materials Co., Ltd. , https://www.chemicaladditive.com
Its dosage is generally 0.5 ~ 2% of the dosage of filler. Coupling agent is generally composed of two parts: one is the inorganic group, which can interact with the inorganic filler or enhance the material; The other part is the organophilic group, can interact with the synthetic resin.
First, a reasonable fertilization