Technical Overview: Ratooning rice is the use of rice regeneration characteristics, after the harvest of the first season rice, using appropriate cultivation and management measures, so that the dormant buds on the harvested piles regenerate buds, and then heading mature rice. It has the following advantages: First, it is a kind of two-receiving, one-season harvest, two-season, and the regeneration season does not require sowing, breeding, and tillage. The second is the short growth period, and the regeneration season generally takes only 60 days to be harvested; To increase grain yield and benefits, renewable rice generally has a yield of 150-200 kilograms per mu, and a high yield of more than 450 kilograms. The development of ratooning rice can make a single-crop rice region a double-crop rice region, which is conducive to increasing seed production and increasing income, and comprehensive utilization of temperature, light and water. Resources, improve production efficiency; Fourth, provinces, provinces, labor, time, water, fertilizer, province medicine; Fifth, cultivation techniques is simple and easy to operate; Six is ​​high quality rice, due to large temperature difference during the growth of ratoon rice, not Medication or less medication, rice quality is significantly higher than the first season rice, and the taste is excellent. Increased production and efficiency: Compared with the cultivation of a rice crop, renewable rice increased 150 kg or more of rice and increased income by about 300 yuan. Technical points: (1) First-season rice cultivation techniques. 1 Select the variety. For the ratooning rice, varieties or combinations with high yield in the first season rice, strong regeneration ability in the later season, suitable ripening period, high quality, strong resistance, and wide adaptability should be selected. Generally, in the plains and hills with lower altitude and better light and temperature conditions, varieties or combinations with longer growth periods can be selected, such as Liangyou Peijiu, Yangliangyou 6, Xinliangyou 6, Qyou 6, and II. You Hang No. 1 et al.; where elevation is high, light and temperature conditions are insufficient, or where water is poor, hybrid combinations or conventional varieties with shorter growth periods should be selected, such as Xieyou 65, Jinyou 38, Zhonggui 288, or Huanghua. Sticky, Fanqing sticky 4th and other varieties. 2 sowing time. The varieties with longer growth period in the first cropping rice of regenerated rice are sown at the end of March, and the younger crops are 30 to 35 days old. The shorter growing period can be planted in early April, and the instars are 30 days old; Varieties are sown at the beginning of April, and the shorter growing period is suitable for live broadcast in early April. 3 Scientific management of water. 4 Reasonable fertilization. The first-season rice generally uses 10 to 12 kg of pure nitrogen per acre, and the ratio of nitrogen, phosphorus, and potassium is 1:0.5:1. Full-layer fertilization and fertilization methods with “tapping, tail-keeping, and middle-control†are applied. The ratio of base fertilizer and top dressing is 7:3. 5 control pests. Pay attention to the control of rice stem borer, rice leaf roller, rice planthopper, sheath blight, and rice blast disease. 6 timely reapply budding fertilizer. This is an important measure to promote early-onset, multi-seedling, high-spike, multi-grain, and high-yield regeneration rice. Usually in the first quarter of rice after full-fledged 15 to 17 days after the application, if the first-season rice lack of fertilizer, premature aging phenomenon, the fertilization time should be appropriately advanced. Generally 10 kg of urea per acre. Mushi urea can be divided into two applications of more than 10 kilograms, apply 15 to 17 days after full ear Shi half, over 3 to 4 days and then half. 7 Harvest in time and leave piles properly. In general, the first season rice fell to the second section of axillary buds to grow leaf sheaths, a small amount of green, and the length of shoots was 3 to 5 cm. In the production, 95% of the grain is generally selected to have the best harvest at the time of ripening, and the latest time is about August 20, which ensures that the ratooning rice will be safely harvested on September 15-20. Generally, it is advisable to keep one-third of the height of the first-season rice or 8 to 10 cm above the bottom of the second-stage, and 35 to 40 cm of the pile height. When harvesting, it is necessary to achieve orderliness and consistency, and do not cut obliquely and cut into clear harvests. The specifics are sunny afternoon cuts, cloudy all-day cuts, rainy days, grabbed after the rain stopped, and grabbed. After cutting, the straw should be transported out of the field in time, not on the rice piles, and the stepped rice piles should be righted in time to promote the orderliness of the regeneration rice. (2) Cultivation techniques for ratoon rice. 1 Scientific management of water. After harvesting the first season rice, it must be timely flooded to protect the seedlings; in case of high temperature and drought during harvest, water should be poured into the pot to increase the humidity in the field, lower the temperature, and increase the seedling rate of the pour-to-fall 3 nodes. After the seedlings are kept dry, wet and dry. 2 Zhu Shi Miao Miao. Reproductive rice seedlings are generally applied within 2 to 3 days after the harvest of the first season rice, and 3 to 5 kilograms of urea per acre is used to promote the regeneration of seedlings. 3 control of pests and diseases. The main concern is the control of rice planthoppers, leafhoppers and other hazards. 4 spray foliar fertilizer. Foliar fertilizer is generally used in the heading stage of ratooning rice with "9:20" 1 gram, plus 100 ~ 150 grams of potassium dihydrogen phosphate, and 50 kg of water sprayed. Every 3 to 5 days before spraying again, the effect is better. 5 yellow ripe harvest. Because the reproductive buds of different nodes in the regeneration rice have different growth and development, and the maturing maturity is also uneven, so it is not advisable to insist on harvesting the yellow ripe, so as not to affect the yield. Appropriate area: Ratooning rice is mainly suitable for the double cropping rice area in our province, or where there is abundant temperature and light conditions and a season of rice is more than sufficient, mainly concentrated in Jianghan plain and southeastern Hubei. Matters needing attention: First, increase the degree of emphasis. The cultivation of peasant households should really regard the ratooning rice as a kind of crop planting in the first quarter. Do not hold the idea of ​​collecting income and income, and lose income. The measures, especially investment, must keep up. The second is to ensure a good first season rice. The first season rice is the basis of ratooning rice, and the first season rice and the ratooning rice grow on the same root system. The nutrient part of the young shoot growth of the ratooning rice is derived from the nutrient stored in the first season rice plant. Therefore, good varieties of regenerated rice should start from high yields in two seasons, focus on the cultivation of individuals, constitute a suitable group, improve root vigor, extend the life of the leaves, to ensure that when the mature yellow, stalk green, green leaves, strong roots, strong buds.
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