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The first is scientific fertilization. Fertilization should pay attention to the application of potassium. The application of potash fertilizer can regulate the physiological role of rice, which will benefit the strong stalks of rice. Generally, 7.5 kg of potassium chloride is applied per acre, and 10 kg of urea are used together. There are no plow blocks for the front basal and basal fertilizers, and 20-25 kg of calcium, magnesium, phosphorus may be added per acre.
The second is scientific management of water. The principles of scientific management of late rice are: live water in deep water, shallow water, water, water, and heading grouting. After 15-20 days of late rice transplanting, the field water is allowed to dry naturally or dry out, control of ineffective tillering, and increase of spike rate. This is especially important for high yield seedlings. For places with good water conditions, dew can be used to expose the fields. Where water sources are poor, water storage and seedling maintenance should be the main method to prevent drought. The method of using water falling into the sun to dry the fields is as follows: The time for falling into the water and drying the fields is generally 7-10 days. The seedlings are run with white roots and run over the field, and the edge of the field is fine. The water can be rehydrated by that time. 5-7 days before heading must maintain the water layer in the field, so that there is water heading grouting, in order to facilitate high yield.
Third, pay attention to the control of sheath blight. High-yielding seedlings are susceptible to sheath blight because of the shading in the fields, high humidity, and the tender young seedlings. Sheath blight can harm leaf sheaths, affect photosynthesis, and reduce grain weight. Sheath blight can be used to control chemicals. After the rice seedlings were sealed, field investigations were conducted. It was found that there were water-infiltrated plaques on the leaf sheaths of the base of the seedlings and they were immediately sprayed with Jinggangmycin and other counterparts. On the basis of spraying pesticides throughout the field, we will focus on controlling the northwestern fields. 5-7 days once, continuous control 3-4 times. In addition, the salvage residue will be burned in the field before transplanting, and long-term irrigation of deep water in the field will reduce the risk of sheath blight. At the same time, we must also pay attention to the prevention and control of rice blast, rice stem borer, leaf roller, rice planthopper and other pests and diseases.
Anti-late rice seedlings "high-yield disease"
After the late rice seedlings are transplanted, they return to green and fast, and the tillers are early, and the seal period is short. Such seedlings are a kind of seedlings, also called high-yielding seedlings. If these types of seedlings are poorly managed in the field, they may easily lead to overgrowth of nutrients and lead to late reproductive growth disorders. The rate of seed settling will be reduced, and a “grass-quiet people’s valley†will appear. We call this phenomenon a high-yield disease. There are three main measures to prevent high-yield diseases in late rice.