How to prevent early rice rotten species

Editor's note: The one-year plan is spring. Rural spring sowing is now under way. In order to do a good job spring sowing spring, science and technology should go ahead. In order to allow farmers' friends to seize agricultural time and scientifically plant good crops, the experts of the special provincial Academy of Agricultural Sciences wrote an article on the spring sowing of the main crops in our province, introducing some new varieties or new cultivation techniques, hoping to help readers Take the road to efficient cultivation. In early spring in Hunan, from March to May, there are lots of sunshine, rain, humidity, low temperatures, and cold currents. Early planting of early rice may cause rotten seed and rotten seedlings. Therefore, in order to nurture strong maggots and avoid bad seeds and rot, we can take five Point measures. First, choose a good cold-resistant early rice varieties. Such as conventional early rice: Xiangzaoxian 24, 29, 32, Xiangfengzao 119, Xiangzao 143, 98, 667; hybrid early rice: Baliangyou 100, Jinyou 974, Zhuyouyou 99 and Weiyou 402, etc. combination. These varieties or combinations are moderate in plant height, well-developed in root system, thick in stems, and resistant to cold, drought, and lodging, and are resistant to cold damage. Second, the seeds must be sun-dried before the seeds are soaked to increase the seed germination rate. Due to the heavy rainfall in spring and the high humidity in the air, most of the seeds are kept by rice farmers, especially large nylon bags, sacks, or scattered seeds tend to recuperate. The moisture content of seeds is high, which affects the germination rate. Therefore, it is particularly important to do a good job of drying seeds. . The drying time is arranged in 2 to 3 days before soaking, when the sun is thin, evenly distributed, diligently turned, and the biting grain is sounded to the mouth. After drying, put it in a dry place and wait for soaking. Third, the good seed disinfection. Many diseases of rice, such as bakanae disease, rice blast, bacterial leaf blight, and bacterial leaf streak, attach to seeds and are sown with diseased seeds. The bacteria will spread to the fields and fields with seeds, causing diseases to seedlings and seedlings. . Therefore, seed soaking prior to sowing is required to disinfect seeds. The commonly used rice bactericide is strong chlorine concentrate produced by Xiangtan Zhonglian Pharmaceutical Factory in Hunan Province. Each package contains 10 g of water and 4 to 5 kg of water, 2.5 kg of rice can be treated, and soaking for 24 hours. After washing with water, germination. Fourth, promote good roots. Germination methods are many, there are electric steam, coal ash, straw, cow dung and other germination, no matter what method, to do germination when people do not leave, day and night watch, grasp the high temperature break the chest does not exceed 40 °C, after 2 to 3 times mixed , The rate of breaking the chest reached more than 90%, then spread cold, eat clean water, germination control temperature 30 ~ 35 °C. Look for good weather draughts. The root buds that are so elicited are short-grained, fresh-colored, odor-flavored, and resistant to cold and drought. They are sown in Putian early and back to green. Fifth, grab a sunny day and thin broadcast uniform coverage to do a good job coverage. General early-season conventional seed varieties with 5 kg per mu, hybrid early alfalfa combination 2.5 kg, grab the early end of March at the beginning of April cold head warmer at noon sowing is appropriate. When sowing, the sides should be leveled, put on the side of the pan, and the sides should be collapsed. The seedlings should be sown several times to make the seeds evenly distributed on the surface of the floppy or surface of the car. Immediately after sowing, cover the spacers to prevent the agricultural film from sticking to the mud surface. The spacers are made of old oyster shells, rape shells, and screened dry soil. Six days after sowing, no matter whether it is rain or weather, it must be sealed. After every three days, the membrane should be ventilated.

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