"Mr. He, you see, this year's rice in our village has been better than any other year. However, how to carry out scientific management after transplanting rice can achieve the goal of stable production and high yield. We have not counted in your heart. Please give us your trouble. Let me talk about it!†On June 3, when He Shaocheng, a senior agronomist of the Nanjiang County Agricultural Bureau of Sichuan Province, came to Jianhua Village of Changchi Town, and immediately asked a question from several farmers, such as Tang Chengrong, and immediately plucked a seedling into the field. The field told the farmers about the rice field management technology class. Lao He said that rice field management should mainly grasp four key links:
Management after transplanting
After transplanting rice, due to root injury, the ability to absorb water and fertilizer is reduced, the upper part of the ground stops growing, and the color of the leaves turns yellow until the new roots begin to grow. At this stage, one must do a good job of checking seedlings and replanting seedlings. On the second day after transplanting, it is necessary to go to the field for inspection. If it is found that there is a lack of litter and supplemented with the prepared seedlings, the raft will be re-inserted, and the seedlings will be rectified to ensure the proper density and basic seedlings. . The second is to see the seedling irrigation. After the seedlings are transplanted, some water can be deepened. After two or three days, it will fall to an inch or so. The third is to timely dressing and weeding. 5 days after transplanting, the mu was mixed with 10-11 kg of urea and 70% of the weeding net 70-80 g. When the seedlings grow to 8-9 leaves, combined with cultivating acre, the potassium chloride is about 7.5 kg.
Club time management
The tillering stage of rice is mainly long root, long leaf and long tiller vegetative, which is the main period of vegetative growth and is the key period for determining the number of panicles. Management tasks: It is necessary to promote the rapid development of early birth, increase the effective sputum, control invalidation, and reach the normal "joint yellow" in the highest tillering period, laying a foundation for high yield.
Early application of manure. In the beginning of the tillering period, the application of nitrogen fertilizer to meet the needs of long leaves and long tillers of rice, 2.5 kg of urea per acre is appropriate, up to 5 kg. Fertilization should not be too late, otherwise it will easily cause the child to fall.
Shallow water irrigation, appropriate drying field. Rice is generally irrigated for about 1 inch during tillering, especially during effective tillering. It can increase the temperature of the ground temperature and promote the decomposition of soil nutrients. The light and oxygen at the tillering section are sufficient to promote the occurrence and growth of tillers. When the effective tillering period is over, deep water is required to inhibit the occurrence of tillers. When the growth is too strong, it can be drained to the field, and when the sun is pressed, the person does not get stuck in the foot. Rewatering in time after drying the field, the water depth is 3-4 cm. This plays a role in controlling growth, reducing ineffective defects and preventing lodging.
Control weeds and pests. Herbicides have been widely used in weed control, which not only eliminates weeds in rice fields, but also reduces a lot of heavy labor. In the tillering period, pests and diseases should be controlled. The main diseases are rice blast, mite, brown spot and bacterial leaf blight. Insect pests include Chilo suppressalis, Rice locust, and Rice leaf roller. It should be checked in time and prevented in time.
Long-earth management
The growth characteristics of rice during this period is that vegetative growth and reproductive growth go hand in hand; in addition to the sharp growth of stems, the young panicles rapidly differentiate and form, and the tillers are transformed into two poles, which effectively continue to grow and develop, and the inactive mites gradually die, and the rice fields must prevent premature death. Sealed to ensure good differentiation of young ears.
Skillfully applied long-term ear fertilizer. Any leaf-yellow-deficient field after jointing should be applied with panicle fertilizer, which has a significant effect on consolidating effective tillers and increasing the number of grains per panicle. Generally, about 2.5-5 kg ​​of urea is applied. Do not apply too much fertilizer, so as not to cause adverse consequences. Booting is generally no longer topdressing, such as the yellowing of stems and leaves at the end of the booting stage, showing premature aging, and can be applied to the fertilizer 15 to 18 days before the earing. Generally, 1 to 2 kg of urea is applied per mu. Do not allow too much fertilizer to cause gluttony and late maturity.
Fill the "fostering tires" water and dry the fields in due course. The panicle differentiation stage of rice is the period of rapid growth and water demand in rice during the whole life, and it is the weakest period of drought tolerance and cold tolerance. If water is scarce, the young ear is affected first, which not only affects the normal development of pollen grains, but also affects the transportation of nutrients to the ear. It is easy to cause short ears, few grains, and many empty shells. At this time, it is in the midsummer, the sun is strong, the temperature is high, and the water layer can be properly deepened to control the water temperature. Generally keep the water layer 2 to 3 inches deep.
Control pests and diseases. After rice jointing, the epidemic of pests and diseases, sheath blight, bacterial blight, leaf blast, and stem borer, rice leaf roller, rice borer, etc. are often harmful during this period, and attention should be paid to timely treatment.
Solid period management
The general principle of rice management during this period is to raise roots and preserve leaves, prevent premature senescence of leaves, and promote large and full grains to prevent empty shells.
At this stage, it is necessary to properly irrigate and drain at the right time. During the flowering and blooming, the field still needs to maintain a certain water layer, adjust the water temperature, increase the air humidity, and facilitate flowering and pollination. In the filling period, dry and wet and wet, mainly wet, the method of irrigation, that is, after pouring water, naturally dry for l or 2 days, and then once again water. This can achieve the purpose of nourishing the roots with water and protecting the leaves with water, which is conducive to promoting the filling and preventing premature aging.
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