The light and temperature conditions during the early rice planting period are generally suitable, the tillering is faster, the individual development is robust, and the early rice production base is better. However, the meteorological department predicted that on May 27-29, some areas in the middle and lower reaches of the Yangtze River will have a daily maximum temperature of 34-36 °C, which may adversely affect the growth and development of early rice.
The Rice Experts Guidance Group of the Ministry of Agriculture recommended that all local areas strengthen the field management of early rice in the middle and late stages, and actively respond to possible high temperature, flood and other disasters, and strive to capture the early harvest.
The first is to strengthen water regulation. As soon as possible, irrigation and seedling protection against cold, especially for early rice that is still not re-irrigated in the sun, should be irrigated as soon as possible to prevent the weather from turning fine and dead. In areas with sufficient water supply, dry and wet wet intermittent irrigation should be adopted before and after heading, and shallow water irrigation during heading should be carried out to achieve water heading, so as to facilitate the uniformity and maturity of heading. In areas where the drought situation is more severe, do not easily release water in the later stage, and always keep the water layer so as to avoid water filling, resulting in drought and reduced production. Before maturity, do not cut off water too early, avoid high temperature ripening, and reduce 1000-grain weight to affect production. At the same time, in order to prevent heavy rain and flood attacks, the field should open a "cross-ditch" and "rich production ditch" to ensure that the water can be drained in time after the rain.
The second is to implement classified fertilization. For the field with early planting, large amount of base manure application, early tillering, large number of seedlings, and excessive growth, it is not necessary to apply panicle fertilizer. In early June, the seedlings were treated with urea and potassium chloride as strong fertilizer. For the late planting, especially the three-crop early rice, nitrogen fertilizer should be applied as soon as possible to protect the manure, and in the first half of June, urea and potassium chloride should be applied as strong fertilizer. For direct seeding early rice, urea and potassium chloride were applied as panicle fertilizer.
The third is to grasp the prevention and control of pests and diseases. Closely monitor the occurrence dynamics of pests in the fields of rice planthoppers and rice leaf roller, and do a good job in the prevention of pests and diseases. In the critical period of prevention and control, the farmers should be guided to choose safe, correct, economical and efficient pesticides, implement standard control, and reduce the base of insects. At the same time, we must pay attention to the occurrence of pests such as rice blast and sheath blight, and strengthen prevention and control work. In the early rice break period, a key prevention and control should be carried out to effectively control the occurrence of pests and diseases and ensure the safety of rice production.
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