2, pharmaceutical treatment of soil. In recent years, serious rice diseases have occurred, and there is also a certain relationship with soil bacteria, such as sheath blight, rice blast, bacterial blight, and other pathogens can be parasited in the soil. Therefore, we should do a good job in soil treatment of paddy fields. At present, there are many fungicides available for soil treatment, such as carbendazim, thiram, dexamethasone, thiophanate-methyl, etc., as well as their compounding agents. The unit dosage should be appropriately increased, generally more than 150 grams per mu. It can be blended with basal fertilizer to ensure that no disease occurs within 25-30 days after rice is transplanted, ensuring the normal growth and development of rice.
3, prevention of aquatic pests. In recent years, rice pests such as rice weevil and mantle have become more serious. They mainly feed on the roots, young stems, and heart leaves of rice seedlings in water, resulting in lack of seedlings and ridges, and should be strengthened. When fertilizing soil before transplanting, granules or powders of phoxim, phorate, trichlorfon, chlorpyrifos, etc., and their granules or powders and fertilizers are mixed and thrown into the fields, and then the soil is rotwed; When the rice returns to green trees and drains the field water, the above-mentioned chemicals may be mixed with sand or fine soil and then sprinkled into the rice fields for re-irrigation. This can also be used for both rice planthoppers and borers.
4, to promote the root technology. At present, there are many regulators that can be used for rice roots, such as Amino Acids, humic acid, cell activators, cytokinins, vitalin, strong rooting agent, and root-strength hormones. These regulators can promote the rooting of rice, make the damaged roots quickly rejuvenate, prevent the bacteria from infecting the root system, shorten the transplanting period of rice seedlings, and promote more rooting, more tillering and rapid growth of rice plants. The method of use is also very simple. After the preparation of the liquid medicine according to the product specification, the roots of the well-picked rice seedlings are directly soaked in the liquid for about 10 minutes, and then they are taken out and directly planted.
5. Expanding and shrinking plantings. At present, most of the rice varieties promoted in various regions are super-rice varieties with large panicle type, high stem diameter, and good luxuriantness. These varieties have poor fertility, and in addition, the cultivation conditions of the rice in most localities are improved, and the amount of fertilizer is large, so it is necessary to expand. The row spacing of rice transplanting, narrowing the spacing between plants, the overall is to reduce the density, the implementation of sparse planting. The specific requirements are: hybrid rice (including hybrid rice and mixed rice bran) with a row spacing of 33.3 cm, a plant spacing of 13.3 cm, planting 15,000 holes per acre, conventional rice row spacing expanded to 26.6 cm, and plant spacing reduced to 10-13.3 cm per acre. 2 million points. In this way, it is possible to reduce the amount of grass cover in the field, which is conducive to ventilation and light transmission, which not only facilitates field operation and management, but also significantly reduces pests and diseases in rice fields.
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