At present, rice transplanting or transplanting is being prepared in various regions. The transplanting in some places has ended and the rice fields will gradually enter the returning green period. The main field management in this period is to return to green and survive, to prevent the growth of young plants, and to promote early-onset and rapid-onset diseases; Many low effective delivery, in order to raise the spike rate and strive to lay the foundation for the panicles and grain weights, should now grasp the following points.
1, early application of heavy fertilizer points, promote early-onset
Due to delays in rice transplanting due to drought and other issues, this year's rice has a shorter effective tillering period. To this end, it is necessary to pay close attention to the application of tillering fertilizer within 7 days after cutting (throwing) to promote early-onset fast growth, and to eliminate topdressing nitrogen fertilizer on cold-sweeping fields. In addition, phosphorus and potassium fertilizers should be added, and potassium dihydrogen phosphate solution should be sprayed on the leaves to prevent freezing seedlings.
2. Early diagnosis and early transformation
Whenever there is a farmer sitting in the field, the agricultural technicians should be promptly asked to conduct a field diagnosis. For sitting and seedlings caused by muddy fields, drainage and tempering should be carried out. Drainage should be used to lower the groundwater level and phosphorus and potassium fertilizers should be added. For sitting seedlings caused by sticky thin fields, decomposed organic fertilizers should be added to supplement phosphorus and potash fertilizers and trace fertilizers. For the seedlings caused by improper use of herbicides, they should be re-irrigated after field water, the water layer should be kept 3-5cm deep, and potassium diphosphate should be used for extra-root fertilizer.
3, scientific irrigation
After the seedlings are thrown and inserted, they should be nursed in time and the water layer should be kept at about 1/2 of the seedling height. In case of fine weather, the seedlings should be filled with deep water to protect the seedlings. The water layer should be about 2/3 of the seedling height. As long as there is a thin layer of water in the rainy days, it will enter the thin water layer management after 3-4 days of insertion. Avoid deep water for a long time, resulting in roots and defects. The heart is deprived of oxygen and forms a water-blown seedling and even a rotten seedling.
When the rice returns to green, it enters the tillering stage. At this time, shallow water ground irrigation should be carried out. The water depth should be about 3cm. It should be dry naturally and then watered to achieve the purpose of adjusting fertilizer by water, promoting root and water vapor coordination by water, To promote the early birth of childbirth, plants robust, well-developed root system. When the total number of seedlings in the field reached 80% of the predetermined number of panicles, drainage depots were started. The maximum number of stems was controlled at 1.2-1.3 times the number of the scheduled panicles, and the conventional rice yield was effectively 0.2-2.5 million seedlings per mu, and hybrid rice was 200,000. The seedlings began to drain the field and control the growth of ineffective tillers.
4. Strengthen Integrated Pest Management
The main diseases of rice in this period include sheath blight, leaf blast, and virus disease. All of them should be used for the prevention and control of diseases in time; pests should focus on the prevention of aphids.
5, timely weeding
Seven days after the transplanting, herbicides were combined with topdressing tiller.
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