Summer is an important period for the growth and ripening of grape fruits, and it is also the core of year-round management of the orchards. However, during this period, grapes are prone to cracking, diseases, insect pests, and sunburn. Therefore, in order to ensure the normal growth and maturation of grape fruit and ensure the quality and yield of the fruit, the summer management of the grape should be strengthened. The reporter recently interviewed Zhang Zhicheng, an expert in fruit production of Northwest Agriculture and Forestry University. Reporter: How to prevent and treat common pests and diseases? Zhang Zhicheng: Common diseases of grapes include anthrax and downy mildew. The control of grape anthracnose focuses on cultivating the tree shape and implementing “single-armed†plastic surgery. When rainfall occurs, the bacteria are leached to the ground by rain, which greatly reduces the chance of infection on the ear. At the same time, it is necessary to timely pick up the heart, remove the auxiliary tip and tendrils, and make the plane airy and transparent. Strengthen drainage and cultivator, and dig drainage ditches ahead of the easy-to-recovery orchards so that the orchards can be drained in time to reduce the humidity in the garden as much as possible; apply scientific fertilization, pay special attention to the proportion of nitrogen, phosphorus, and potassium fertilizers, and increase micronutrient fertilizers; Improve the plant's resistance to disease. The prevention and control of grape downy mildew should be timely and sheared in summer to improve the ventilation and light transmission conditions, and increase the application of phosphate fertilizer and potash fertilizer to improve the resistance of plants. In addition, 200-240 times Bordeaux fluid can be used for prevention, spraying 40% phosphine aluminum 200-300 times the incidence of control. Reporter: What is the prevention of rotten fruit in vintage? Zhang Zhicheng: To thoroughly remove the bacteria source, the cleared debris should be burnt and destroyed. After the rain, drainage and loose soil should be promptly conducted to keep the air and light in the rack, and potassium, calcium and trace elements should be added in time to spray plant growth regulators ( For example, it is necessary to increase the function of the leaves, increase the tree vigor, and increase disease resistance. Once anthrax and other diseases occur, it is necessary to apply the drug symptomatically. However, attention should be paid to the alternation of use of the agents. Do not use drugs continuously. After the fruit has been stained to prevent pesticides from contaminating the ear, use 12% green milk copper 600 to 800 times for control. Reporter: What is the main cause of cracking? How can farmers' friends take preventive measures? Zhang Zhicheng: The cracking performance of different varieties is also different. Some varieties can produce longitudinal peel breakdown, and some species produce ring-shaped peel rupture near the pedicel. The main causes of fruit cracking are soil drought, more water in the later period, and fruit disease caused by failure or timely harvest. The fruit farmers friends can raise the scaffolding (or fence) planes, increase the height of the ears from the ground, and clean up the vineyards in time, scraping old cracked skins, and burning them centrally or deeply. At the same time, apply enough organic fertilizer to timely watering during drought, and do a good job of pinching, sparse grain, whole ear (to shoulder and ear) work. Rhodium powder Rh≥99.95% Properties: silver-white metal, extremely hard, wear-resistant, also has considerable ductility Application: It can be used as raw material for electrical instrumentation, chemical industry and manufacture of precision alloys. Rhodium powder is based on the widespread use of ruthenium in the industrial industry. Since rhodium is a rare metal required by the industry, the industry price is slightly higher than that of general non-ferrous metals. Rhodium, one of the rare elements, has various uses. Rhodium can be used to make hydrogenation catalysts, thermocouples, platinum-rhodium alloys, etc. It is also often plated on searchlights and reflectors, and is also used as a polishing agent for gemstones. and electrical contact parts. precious metal XI AN RHINE BIOLOGICAL TECHNOLOGY CO.,LTD , https://www.rhinebioteches.com