1, expansion of the "early turn late." "Early turn late" is the use of characteristics of early rice varieties with high temperature sensitivity as late rice cultivation, can achieve early sowing (planting) early maturity, to obtain a more ideal yield, the general yield of up to 250 kg - 300 kg. Technical points: (1) Variety selection and sowing date. In July 20th, if it is currently possible to return live water or to borrow seedlings, late-maturing varieties of early rice should be selected. Before the end of July, the early-season rice varieties can be selected for medium and early-maturing early-season rice varieties. (2) Planting methods. After the return of water, no-tillage and germination water is the main live broadcast method. If the conditions for late flooding are different (borrowing) for raising the larvae, they can be raised as early as possible. The sowing date will be before July 20, and no tillage and transplanting will be conducted immediately after the retreat. Should not be short, usually within 15 days. Regardless of live broadcasting or transplanting, no-tillage methods should be adopted. This can save time and labor and save labor. For residues and weeds, lots of plots should use contact-killing herbicides, such as Gram-free herbicides, to spray dry the field water, and spray them at intervals of 2 days to 3 days. (3) Improve the quality of sowing. Should pay attention to the quality of seeds, should use last year's early rice seeds or just harvested conventional early rice seeds, but must be dried for 2 days - 3 days to break the dormancy period and increase the germination rate. The seeds were soaked with germination until the dew-thickness was white. Live broadcast can be broadcast or on demand. Per acre sowing rate of 10 kg -12.5 kg, early sowing should be less than the late sowing should be more, to ensure that the spread (point) sowing. (4) Strengthen field management. After sowing, we should keep the field moist, combine the early application of “weaning fertilizer†with each leaf, and establish a shallow water layer. The shallow water should be used for irrigation during the tillering period, and the sun should be divided into fields in the middle period and intermittent irrigation in the later period to effectively prevent lodging. It is advisable to adopt early-stage heavy fertilizer, medium-term controlled fertilizer, and late-replenishment granular fertilizer on fertilization. Comprehensive prevention and control of pests and weeds. 2. Retained rice. Ratooning rice is the use of dormant buds on the rice piles after the harvest of the former loquat rice. The regenerated rice is given suitable water, temperature, light, and nutrients, and cultivated so that it reproduces and regenerates the loquat, and the head is then matured. Our province has an application potential of 300-500 million mu, and a good general management yields 200-250 kg per mu. Technical points: (1) mouthwash. Early rice in the south of central Jianghuai and early mature rice can be used to accumulate renewable rice. General hybrid rice is better than conventional rice, no disease and pest is better than premature aging. (2) Harvest period. Fan Qiang can be harvested on August 15th (in the middle and south of Jianghuai) - 20th (in the south of the river) to ensure that the heading of ratooning rice is safe before September 20. (3) Strengthen field management. First of all, we must strengthen field management of the first crop rice to ensure the survival rate. Secondly, it is necessary to pursue budding fertilizers and preserved fertilizers, that is, 15 days to 20 days after the head rice is full of panicles, and 10 to 15 kg of mu for urea to attack buds and flowers, which is the most critical measure for the high yield of ratoon rice. Within 3 days after harvest, 5 kg of urea was applied to protect long-leaved roots. The second is that the former should harvest crops in due time and keep them high, that is, when the previous crop is mature, it will be harvested in due course, leaving 25 centimeters to 30 centimeters to retain the pours of the 2nd and 3rd. The third is to strengthen the field management of ratooning rice, weeding in paddy fields, moist irrigation in shallow water, and defense of “cold dew-breathing†and early harvest in due course. China Agricultural Network Editor
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