Technical guidance on current Rice production Management

At present, the production of early rice in China has entered the late growth stage, most of the early rice in southern Guangdong and Guangxi has entered the filling stage, a few of them have entered the mature stage, the middle part of Guangdong and Guangxi has begun to heading, and the north of Guangdong and Guangxi has entered the initial heading stage to heading stage; the early rice in the middle and lower reaches of the Yangtze River has entered the milk stage and the harvest is expected to begin around July 10. The northeast single cropping rice is in the full tillering stage, young panicle differentiation stage and booting stage from south to north; the middle rice in the southwest winter water field is in the booting stage, the young panicle differentiation begins in the valley and hilly region, and the Chengdu plain is in the highest seedling stage; the middle cropping rice in the middle reaches of the Yangtze River has entered the booting stage, and the late rice has entered the tillering stage. The transplanting of middle rice in the lower reaches of the Yangtze River is in the stage of standing seedlings, and the direct seeding of medium rice is in the stage of emergence and full seedling. The southern double-cropping late rice has been in the stage of raising seedlings. In view of the current rice growth situation, the rice expert guidance group of the Ministry of Agriculture has put forward the following technical guidelines for the current rice production management:

First, strengthen the management of early rice in the later stage to ensure that the grains return to the warehouse.

First, strengthen water management. Intermittent aerobic irrigation should be used, that is, water should be irrigated until it dries naturally for 3 days. In addition, do not cut off the water too early to cut off water 5-7 days before harvest. The second is to apply foliar fertilizer. Foliar fertilizer was sprayed once at full heading stage and filling stage to improve seed setting rate. Third, strengthen the prevention and control of diseases and insect pests. Focus on the control of borer, rice planthopper, rice leaf roller, rice blast, bacterial leaf spot, rice false smut and so on. Fourth, it is necessary to organize rush harvests in a timely manner to achieve a mature harvest, so as to avoid further losses caused by flooding.

Second, strengthen the field management in the middle and later stage of medium rice to ensure full panicle and large panicle.

In the rice area of the lower reaches of the Yangtze River, tiller fertilizer should be applied early for hand-planted rice of medium and large seedlings. Generally, 7-8 kg of urea per mu should be applied 5 days after planting, and 10-15 days after transplanting, and then tiller fertilizer should be applied according to the diagnosis of seedlings. The management of water slurry should be strengthened in throwing rice, shallow and wet irrigation should be carried out at the tillering stage of living plants, and deep root system should be promoted. 10 days after mechanically implanted rice planting, it is necessary to often open the field for ventilation in order to promote root growth and take root; it is necessary to shelve the field early to control ineffective tillers, generally starting to shelve the field when the whole field seedling reaches about 80% of the expected panicle number, and the peak seedling is controlled at 1.4-1.5 times the expected panicle number. In direct seeding rice fields with stuffy seeds, rotten seeds without seedlings or too few basic seedlings (the basic seedlings per mu are less than 40,000 mu), the varieties with short growth period and safe maturity should be selected immediately, and the sowing rate should be increased appropriately, and the density and uniformity of seedlings should be strengthened. early application of tiller fertilizer to promote tillers and panicles. In the southwest rice region, the key point is to strengthen the control of seedlings and control of diseases and insect pests. In the northeast rice region, the key point is to prevent greedy green late ripening, promote early ripening and prevent low temperature chilling injury. In addition, all rice regions must make a good prediction and control of major local diseases and insect pests, such as rice blast in the northeast, rice borer, rice planthopper and stripe blight in the southwest and the middle and lower reaches of the Yangtze River.

Third, do a good job of scrambling for late rice to ensure that the area is not reduced and there are many basic seedlings.

Reasonably arrange the sowing date of late rice to ensure sufficient seeds and seedlings; go to the field with fertilizer and medicine to ensure the planting density and quality; take effective measures to organize abandoned rice fields to ensure that the area of late rice is not reduced.