we are producing different kinds of dog/Cat Treats,freeze-dry,air-dry,dental and canned food.So we are truly looking forward to cooperate with you soon,no matter new products or general products(Chicken, Duck , Fish ..)So if you have any purchasing plan or inquiry about dog/Cat Snacks,could you pls give us a chance to know more about our company,thank you so much. Air-dry Pet Food,Air-dry Pet Meat Jerky,Air-dry Pet Treat,Air-dry Pet Snacks Eastan Pet , http://www.eastanpet.com
Prevention and Control of Rice Yellow Dwarf
Rice yellow dwarf virus disease. In recent years, yellow dwarf disease has commonly occurred in rice throughout the country. The symptoms are as follows: the early plants are dwarfed, the leaves are flanked by yellow and green leaves, the plants are loose, and the angles between the leaves and stems are large and flat. The yellow leaves curled up later, the plants had fewer tillers and the roots were shorter. Severe diseased plants did not produce earings, and they died after about half a month to about a month after onset. The earlines of the mildly diseased plants are delayed, the ear is short and the heads are half wrapped or even wrapped in the leaf sheaths, which is very poor. If the control is not timely, it will cause serious reduction of rice production. The occurrence of rice yellow dwarf disease is caused by the spread of insects, such as black-tailed leafhoppers, large-leaved black-tailed leafhoppers, electro-optic leafhoppers and two-tailed leafhoppers. These pests inject poisonous saliva into the rice tissue when they suck the rice, causing the rice strain to become infected with the virus. Prevention and control of rice yellow dwarf disease must be promptly eliminated before the transmission of poisoning, so that rice does not catch disease. First, cultivation and prevention 1, contiguous planting, reduce the flower field, cut off the leaves and turn into a diseased bridge. 2, choose high-resistance species. 3, increase organic fertilizer, less nitrogen fertilizer, so that plants grow robust and enhance disease resistance. Second, the chemical control 1, early rice in paddy fields and early intervention in early rice Honda control. Use 50% leafhopper powder or 50% malathion emulsion to dilute the water 1000 times and spray it on a sunny evening. 40% dimethoate emulsion can also be used to dilute 800-1000 times liquid, sprayed in the sunny afternoon to evening, also available 25% Zhongkemei Bell 1500-200O times liquid spray. 2. When harvesting early rice, it is necessary to block Tanabe and concentrate the outflow from the outside. 3, early plugging late rice Honda, reduce the damage to the double late rice. When it is found that there are sporadic diseased plants in the field, it is necessary to first spray the rice around the diseased plants and diseased plants to eliminate the diseased leaf mites and prevent spread of disease. At the same time, the diseased plants should be pulled out to eliminate the source of the disease and plug in the seedlings.