(1) Use dwarf resistant varieties. Such as early rice should choose Jia Yu 293, Jia Yu 280 and other varieties, these varieties of plant height moderate, thick stems, lodging resistance is strong, the yield is also higher, is currently the preferred species of production, and Jia 948 and other lodging resistance Poor varieties should not be thrown seedlings, live cultivation. Continuous cropping of late rice can be used for mid-maturing late-maturing varieties such as glutinous 18 and Ning 67, and early-maturing late-indica varieties such as 甬粳52, 甬粳38, and C93-390 are also available. In the evening, there are fewer varieties that can be used for live broadcast, and there are straight 922 and other varieties.
(2) Appropriate control of basic seedlings. The population base was controlled by controlling the seeding amount of direct seed rice and throwing down the field seedlings. Usually broadcast early rice broadcast 4.5-5 kg ​​per mu, single-season rice broadcast 3.5-4 kg, even for late rice broadcast 6-7 kg. Early rice throwing throws 110,000-130,000 seedlings per mu, single-season late rice throws 80,000-100,000 seedlings, and even late rice throws 120,000-140,000 seedlings.
(3) Advance the field and control the peak seedlings. When the seedlings per day and seedlings of the direct seeding rice field reach 80% of the planned number of panicles, the field can be put down, and the number of seedlings per acre is controlled to be about 1.5 times the number of planned panicles, so as to improve the structure of the population and reach the medium and strong individuals. Purpose to enhance plant resistance.
(4) Strengthen fertilizer and water management. For throwing seedlings and direct seeding rice, fertilization should be promoted before, during, and after supplementation. At the same time, fertilizer fertilizers should be matched with appropriate control of nitrogenous fertilizer, and phosphorus and potassium fertilizers should be increased accordingly to prevent overpopulation. In the management of water slurry, in particular, it is necessary to do a good job of intermittent field irrigation in advance and in the middle and later stages, in order to promote the development of rice roots, enhance root vitality, and avoid long-term irrigation, otherwise it will lead to root collapse.
(5) Do a good job of pest control work. Transplanting rice seedlings and live rice often have darker leaves in the early stage, and the population in the middle and later stages is relatively large. Therefore, according to the occurrence of diseases and insect pests, pesticides should be selected for prevention and control. Otherwise, large areas will be caused by pests and diseases.
(6) Chemical regulation. For groups that are too large and have the risk of lodging, spraying uniconazole (or oxazole) at the beginning of the jointing process. According to the test, the early rice jointing period, each metering with 1.5-2 kg of uniconazole granules mixed with mud or sprayed with 5% Uniconazole EC 20-25 ml per acre, can significantly shorten the internode length, Improve resistance to falling.
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