Do not pay attention to the prevention and treatment of rice smut. In recent years, the occurrence and damage of rice smut has been on the rise. Even more fierce in local areas, some rice farmers have taken preventive measures. However, due to the inadequate control methods, the control effect is not satisfactory. Therefore, some farmers feel that rice smut is difficult to cure and even think that prevention and control are useless. Many farmers this year simply gave up on prevention and treatment. Therefore, some of the most serious hillocks generally do not take preventive measures or preventive measures. In fact, as long as appropriate control strategies and technologies are adopted, rice smut can be controlled.
Do not attach importance to agricultural control measures. It is not enough to rely on chemical control alone for rice smut, and it must be combined with agricultural control. However, the varieties of susceptible rice smut are still selected in places where the annual rice smut is serious. For example, if the leaves have a wide angle, the number of secondary branches, and the number of grains on the secondary branches are larger, the large ear combinations are not used; the seeds are not disinfected before the germination; the partial application of chemical fertilizers, especially partial or late application of nitrogen, causes crowns. Layers of leaves are too large, overgrowth, severe shading in the field; long-term irrigation of deep water and so on. In view of this, in areas where the annual occurrence of rice smut is more serious, we must promote paddy-soil rotation and crop rotation, and use a combination (cultivar) that is resistant to rice smut or rice smut. To do a good job in surveys and comparisons, select a local comparatively good combination (cultivar) resistant to rice smut. In general, the combination of the number of primary branches and the number of grains on the primary branch (cultivar) has relatively good resistance to rice smut, and it can be used as a reference when selecting the variety; 50% carbendazim 600 times solution, prednisone is used before the germination. 800 times liquid, 12% green milk copper 600 times soaking, can kill the seeds on the bacteria. After cleaning the seeds with clean water, soaking and germination are performed. For the hillocks with severe rice smut in the middle season, straw is not used for returning to fields. On organic fertilization, organic fertilizer is the main fertilizer, supplemented by chemical fertilizers, and NPK combined application. Organic manure, phosphate fertilizer or compound fertilizer is used as base fertilizer, topdressing is applied 5-7 days after plugging, to prevent over-fertilization. Topdressing also pay attention to the use of silicon fertilizer, mu dose 30-40 kg. In the middle and late periods, no rhizosphere topdressing is generally performed to ensure robust growth in the middle and late periods. In the management of the water slurry, mainly wet irrigation is used to promptly expose the fields.
Apply too late. The survey found that farmers generally apply pesticides at the heading stage of mid-season rice, even during the grain-filling period. This is tantamount to sending umbrellas after the rain. The spores formed by the germination of rice cultivars invade the ear during the booting stage. During this period, the sheath sheath is loose, which is conducive to the invasion of rice straw. According to trials and practices, it was repeatedly proved that the first application was performed at the booting stage, which was about 10 to 14 days before heading, that is, the flag leaf (the last leaf), and the second application was made at the beginning of the break. .
Pesticides are not very selective. Some farmers use tricyclazole, Fuji No. 1, and rice bran to prevent and control, the effect is not very good. The 12% green copper milk, 77% can kill the control effect is good, but the application may cause harm. In the booting stage, it can be controlled by quick-icking or triadimefon, and the use of Jinggangmycin (which can not control the germination of thick tamaris) during the break period can prevent the spore ball from expanding and prevent it from contacting with the embryo.
The Egg Collecting System transport eggs into the egg storage. The egg receiving device between the vertical egg elevator and the central egg conveying chain slow down the egg running speed, therefore reduce the eggs breakage rate.
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