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The provinces of Zhejiang, Guangdong, Guangxi, Fujian and Hainan in the middle and lower reaches of the Yangtze River, including Hunan, Hubei, Jiangxi, and Anhui, are the main planting areas for double-cropping late rice in China, covering an area of ​​100 million mu. Therefore, it is of great significance to ensure the good harvest of double cropping late rice in southern China and to stabilize China's rice production and even the entire food production. According to local production surveys, we analyzed the existing problems in the current double-season rice production and put forward field management opinions. I. Current Major Issues First, since the beginning of summer, especially during the harvesting period of the early rice harvest, a relatively long period of storms and floods occurred in some provinces in the Yangtze River Basin, affecting timely harvesting of early rice crops; in some areas, water reclamation was delayed, resulting in partial late rice planting. The postponement of the intervening period, the tight production season, and the increased pressure on field management will threaten the safety of late rice. The second is to promote light-weight cost-saving cultivation in all localities. The area of ​​throwing and no-tillage throwing in double-season late rice is expanding, but there are serious technical incompatibility problems. The outstanding performance is one-night rice breeding technology, but it fails to cultivate standards according to technical requirements. Dry seedlings and seedlings, seedlings and seedlings are of high age, affecting seedlings and seedlings; 2 weed control and no-tillage techniques are inadequate, some local herbicide types and methods have been improperly selected, and the effects of stubble weeding and weed control are poor, and Honda's regenerating seedlings and grassland are more serious; 3 The quality of throwing dumplings is not high, the population density is too small, and there is a situation of direct seeding with water-raising seedlings. The quality of seedlings is poor and seedlings are difficult to establish. The third is the unscientific management of water after planting, and the phenomenon of pleasing deep irrigation of water is not confined. It is not conducive to the erection of seedlings and the birthing of transplanting fields. Fourth, the base of diseases and insect pests is high, and the potential is fierce. There is a great danger of potential danger. This year's climatic conditions are more conducive to the occurrence of a variety of diseases. The base number of S. chinensis is high, and overlapping generations are extremely unfavorable for accurate forecasting and control. The migratory migratory locusts also tend to show a heavy tendency; especially in the heavy rains in the middle or late July, the problem of string flood irrigation is prominent and may lead to late-season white leaves. Blight spread and spread, causing major outbreaks and pandemics. II. Field Management Opinions Regarding the current problems in the production of double-season late rice, local governments should strengthen guidance on classification, take appropriate countermeasures, and effectively strengthen field management. (a) early early management, early fighting, early enough seedlings. The first is to apply fertilizer in early stages and fight for "a boom." During the late rice growth, the temperature was high during the growth period, and the early spikelet differentiation occurred earlier. The hybrid rice cultivars with a long growing period had a short period of time before and after the beginning of the autumn, and the young panicle differentiation was also started before and after the mid-August. . Therefore, after transplanting, the manure should be harvested early to promote the early occurrence of early onset of low-level eel, so as to form an effective and effective prosperous system. The late rice tiller fertilizer is applied about 5 days after cutting (throwing), and it strives to send foot seedlings about 15 days after planting. Generally, 10 kg of urea and 5 kg of potassium chloride are applied per acre. No-tillage castrated field should pay attention to split application, to avoid loss. The second is scientific management of water. Transplanting late rice seedlings planting wounds affecting root vitality, coupled with high temperature foliar transpiration, should be based on shallow water transplanting, appropriate irrigation deep water to promote the return of Qinghuo, back to green shallow water layer to promote the delivery. Seedlings and no-tillage seedlings should be planted with flowers and water to promote the establishment of seedlings. Do not infuse deep water to cause flooding and affect the establishment of seedlings. After the establishment of seedlings, implement moist management, gaps and open fields, promote the development of tillers and roots, and improve the resistance to throwing rice. . (B) timely control of seedlings in the field to prevent the group is too large. Late rice has a short effective tillering period. Too many invalid tillers will not only fail to increase effective panicles, but will worsen the population and cause disease. It is necessary to pay attention to the timely control of seedlings in the field through the principle of “time to time seedlings, seedlings to substandardâ€. Transplanting plots should be based on soil, fertility, and seedling potential, low fertility, weak seedlings, light exposure, suitable for exposure; high fertility, seedlings, and prosperous to take appropriate re-sun. Turning ploughs and throwing plots are fast, and should be properly sun-dried and re-sun; no-tillage plots are relatively late, and seedlings are relatively slow and should be exposed to light. (3) Skillfully applying panicle fertilizer, supplementing granular fertilizer, competing for big spikes and competing for weight. Late rice production generally uses less Organic Fertilizer, coupled with high temperatures, decomposition of organic matter and decomposition of chemical fertilizers are fast, and it is easy to cause lack of fertilizer in later stages. Small groups of small plots can apply early to promote flowering fertilizers and compete for large spikes. Large groups and prosperous growth should appropriately apply fertilizers at night to prevent the degradation of spikelets and to ensure the preservation of grains. The early fertilizer application is heavy, and large groups may not be applied. Panicle fertilizer generally applies 15:15:15 Compound Fertilizer 7-10 kg, or urea 2.5-3 kg plus potassium chloride 4-5 kg, superphosphate 5-10 kg. The existing varieties have more spikes, larger grains, and longer filling time. They need to increase grain weight and quality. They should also be properly supplemented with grain fertilizers during the grain filling stage to extend the life span of functional leaves and prevent premature aging. They can be applied at the break filling stage per acre according to growing conditions. 2-3 kg of urea, or 1.5-2 kg of urea plus potassium dihydrogen phosphate 150-200 g watered 50 kg foliar spray, to speed up the grouting, increase the seed setting rate and 1000-grain weight. At the same time, we implement wet management to prevent water cut off prematurely. (d) prevent pests and diseases. In addition to the physical control of pests and pests of late rice in the cultivation and management and frequency-induced lamp trapping and killing of pests, it is necessary to effectively strengthen biological and chemical prevention and control work. Before and during the middle period, we must pay attention to the prevention of bacterial blight and three generations of rice stem borer. We should prevent sheath blight at jointing and booting stage, and should pay attention to prevention and control of rice planthoppers after heading. All localities should use the forecast of the local plant protection department to timely and accurately select and use highly effective counterpart pesticides. Bacterial blight in the center of the onset of disease, with 25% of the dry leaves 100 grams of water spray 50 kg spray. The panicle and neck pods were sprayed with 40% rich soil No. 1 EC 100 grams or 20% tricyclazole 100 grams per mu, and 40% of Weiwei Wei 150-200 grams watered 50 kg spray per acre. Rhizoctonia solani was sprayed with 100-150 grams of water and 50 kilograms of water per well in the jointing booting stage. The prevention and control of Sanhua wolfberry use 25% of insecticidal double 150-200 milligrams plus 5% of Pentax 15 milligrams of water and 50 kilograms of spray per acre. Rice planthoppers use 25% fluocillin WP 50 grams per acre, or imidacloprid 10-15 grams watered 50-60 kilograms sprayed rice plants at the base, also can use 5% of Regent 30 ml plus 18% insecticide Double 300 ml, both rice leaf roller, rice borer, and rice stem borer. (five) prevent "Qiuqi." Late rice in the double cropping season in the South, especially in the middle and lower reaches of the Yangtze River, is vulnerable to the “cold dew windâ€, especially the delayed plots of this year's flooded and receded water. The planting period is postponed and the risk of “cold dew wind†is greater. , should be highly concerned. Under the premise of promoting early-onset premature development, it is necessary to grasp the emergency response measures in the later period. 1 When the "cold dew wind" arrives, headings have not yet been taken and deep-water protection "fetus" has been adopted; 2 are relatively slow-developing and have entered the headings before the arrival of "cold dew wind", combined with foliar application of potassium dihydrogen phosphate plus appropriate amount. “Ninety-two O†promotes early earing; 3 At the time of “cold dew-breathingâ€, late-season rice fields that are heading and raising flowers should be sprayed with a warming agent to improve cold resistance and reduce cold hazards.