Current Guidance on Production Techniques of Double Season Late Rice in the Middle and Lower Reaches of the Yangtze River
From April to June of this year, long-term low temperature, rain, and low light in the middle and lower reaches of the Yangtze River led to slow growth and late maturation of early rice, which delayed the transplanting period of double-season rice by 7-10 days, and adversely affected the production of late rice. Based on field research, the Rice Experts Group of the Ministry of Agriculture studied and proposed the current technical measures for production of double-season rice.
One or two stages of childbirth, to prevent early spikes. The existing late rice varieties have weak photosensitivity, high temperature sensitivity, and low elasticity. Seedlings older than 35 days old, especially floppy seedlings, due to large seeding rates, individual seedling development is poor and early spikes are prone to occur. Two-stage seedlings should be used in time, that is, they should be planted once in Putian and then planted. To Daejeon, prevent early spikes.
Second, floppy disk throwing to ensure the number of seedlings. Late rice seedlings have large individual growth and high seedling height. They are not easy to spread evenly, they are easy to fall down, and they are difficult to stand. It is suggested that the throwing and throwing should be carried out to promote seedling growth and restore growth. At the same time, ensure the planting density and evenness, and planting basic seedlings.
Third, with fertilizer with medicine, strong Shimoda. Before 4-5 days of transplanting, 5-6 kg of urea should be applied per mu of paddy field; spraying pesticide should be applied 2-3 days before transplantation, focusing on the control of rice thrips and white backed planthoppers. In addition, the young seedlings will be washed with mud or put down the field to reduce the transplanted planting wounds of the seedlings and ensure that the strong grasshoppers fall into the field.
Fourth, add fertilizer, promote premature hair. Late rice has increased in age, the ability to deliver seedlings has declined, the number of tillers has increased, and the number of tillers has decreased. It is recommended that the base fertilizer and tiller fertilizer should be increased to 80% and panicle fertilizer should be reduced to 20%. After 4-5 days after transplanting (after casting seedlings, the amount of urea should be 5-7 kg per mus). Early hair.
Fifth, reduce the elimination, to prevent inhibition. Herbicides have a certain inhibitory effect on rice growth, which will delay the growth of rice. Weeds that are not seriously endangered should minimize or eliminate the use of chemical herbicides to prevent the growth of rice from being inhibited.
Sixth, no-tillage cultivation, strive for agricultural time. If paddy fields with mature rice harvesting period are too late, if the machinery and animal strength are tense, it is recommended that the double-season late rice be cultivated with no-tillage, that is, paraquat or grammide shall be used for weed removal. After 1-2 days of soaking, they are thrown or transplanted to reduce the amount of crops. Take time to plant as soon as possible.
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