1. Identify grape black spot disease, also known as shrinking disease. The common name "black spot" is an important disease of grapes. The main symptoms are: (1) Leaves. In the early stages of the victim's injury, large brown spots of the needles developed, and afterwards, they developed round lesions with a tan diameter of 1-4 mm, and the central area became gray. Finally, the diseased tissues became dry and hardened and fell into perforations. The young leaves are often distorted after being victimized and shrunk to deformity. (2) fruit. The fruit is not susceptible to the disease after being stained. In the early stage of greenery, brown round spots were produced. The middle spots of the round spots were gray and white, slightly concave, and the edges were reddish-brown or purple in shape like "bird eyes." Multiple small lesions combined to form large spots; later lesions hardened or cracked. The disease is small, sour, and has no food value. (3) New shoots, petiole, fruit handles, tendrils. After the initial disease, a round, brownish brown dot develops, which then turns grayish black. The central depression becomes a dry, cracked, ulcerous spot with severe onset of dryness or death. 2. The onset of pathogens The pathogenic bacteria in the orchard reside in the diseased tissues in winter, and the lesions on the mother and tendrils are mainly caused by the pathogens. Conidia are produced when environmental conditions are appropriate for the following year. Conidia spread by wind and rain, the initial victim is new shoots and young leaves, after the infection of fruit, tendrils and so on. The invasive period after spore invasion is 6-12 days. The disease usually starts after the temperature rises from late May to early June, and the onset of the disease occurs from mid-June to early July and the disease ceases to develop after October. From the grape growth period, the disease occurred in the flower buds. The individual disease resistance of grapes varies with the stage of development. General disease resistance increases with the maturity of the tissue. Such as young leaves, young fruit, tender shoots and other most susceptible. The disease resistance of the leaves that stopped growing and the color of the fruit increased, the partial incidence of nitrogen fertilizer, the growth of new shoots, the vigorous development of autumn shoots, and the slime of the orchard soil, the high groundwater level, the high humidity, and the poor ventilation and light transmission weight. 3, control methods (1) do a good job orchard health. Combined with pruning in winter, removing diseased leaves, diseased fruits, diseased vines, etc. (2) Spray protection. Before the germination, spray 3-5 Baume of lime sulfur, or 1 Baume of lime sulfur plus 0.3%-0.5% of sodium pentachlorophenol, or 5% of ferrous sulfate. In the grape growing period, from the start of the leaf to the fruit 1/3 ripening, spraying once every 15-20 days, the drug can be used 1000-1500 times liquid foliar, 200 times fond zinc, 50% carbendazim Wettable powder 1000 times, 65% Zeoxin WP 500 times, or 1:0.5:200 Bordeaux mixture. (3) disinfection of seedlings. Grape black pox disease spreads mainly through seedlings. Therefore, strict inspection of seedlings and cuttings must be conducted, and seedlings suspected of being infected with bacteria must be disinfected. Commonly used disinfectants are ferrous sulfate crude sulfuric acid (1 part of ferrous sulfate plus 1% crude sulfuric acid), or 0.5% sodium pentachlorophenol plus 3 Baume of lime sulfur.
Chongqing "Terson card" Coptis, Department of Chongqing Shizhu Tujia Autonomous County specialty, China National Geographical Indications products (native geographical products). Because produced in Shizhu County, Yellow River National Forest Park, also known as "yellow Coptis." Coptis Coptis Coptis Coptis Coptis Chinensis Franch dried rhizomes, medicinal products for the "taste even", commonly used expensive Chinese medicine, Shizhu County Coptis original area, China's Coptis town, due to the high quality, was identified As "Sinopharm" "Authentic Coptis". Coptis has the characteristics of branch fertilizer, flesh thickness, length, color and high content of active ingredients. Its content of berberine (also known as berberine) is 5.20-7.69% (Chinese Pharmacopoeia 2015 edition shall not be less than 3.6% ); Coptis alkaloids (Coptis, Worenine, Palmatine, Jatrorrhizine, etc.) content below 0.5%. In addition, it contains Magnoforine and a Lumicaruleic acid, Ferulic acid.
Coptis
Heat Dampness Coptis,Selected Coptis,High-Altitude Shizhu Coptis,Wild Stone Column Coptis
Chongqing Taisun Pharmaceutical Co., Ltd. , http://www.taisuncoptis.com