First, return to the green water management: flower water transplanting seedlings, seedling protection after the deep water, depth of seedlings 2/3, with no flooding seedlings as the standard to protect seedlings with water to warm the water and promote rice quickly turn green.
Second, the water management during the delivery period: shallow water irrigation after returning green, 3-5 cm water layer, to promote warm water with shallow water, early life and fast hair. Sunlight can directly shine on stems, increase water temperature and temperature, increase soil oxygen content, promote root development, and promote the occurrence of rice tillers. After 3-7 days of transplanting, the manure was applied and combined with chemical herbicides for weeding. The latest application is at the 5.5 leaf stage. Avoiding fertilizer response After the critical period of effective delivery, the effective leaf delivery at the critical leaf level is 8 leaf phases, resulting in more ineffective delivery. From this time to the jointing stage of rice, it is not appropriate to apply urea again to prevent the fertilizer effect from causing leggy and increasing lodging during the jointing stage.
At the end of childbirth, when the field reaches 80% of the planned seedlings, the field is controlled for 5-7 days and the control is ineffective. The ground was moist to the field or cracked on the claws of chickens. The rice leaves turned green and the base became round and hardened. After the field was dried, shallow water management was performed and wet and dry alternated. Sundry can control ineffective delivery, consolidate effective delivery, and ensure the number of effective panicles in the field. Sun drying allows the atmosphere to enter the soil directly, enhances soil permeability, improves soil structure, and increases oxygen content in the soil. The number of new roots in the field has increased, which has promoted the extension of the root system, expanded the range of root activity, and enhanced the absorption capacity. The control of the sun by the sun controls the absorption of nitrogen, enhances stem fiber synthesis, controls elongation elongation, improves lodging resistance, and lays the foundation for large spikes and grains. Dry field reduces the air humidity between plants, improves the microclimate environment in the field, destroys propagation conditions of pathogenic bacteria and eggs, and suppresses the occurrence and harm of pests and diseases.
III. Management of water layer in booting stage: Shallow water irrigation and application of fertilizer after drying. Panicle fertilizer can be based on field performance. It is generally recommended that the water layer should be maintained at 5-7 cm. The lack of water will cause the degradation of the spikelets and the decrease of the ear grains. The water depth of the rice is long and the stems are soft and easy to fall. Boots in case of low-temperature cold damage will cause abortion, low temperature when deep water, tire protection, water layer 18-20 cm.
IV. Management of water layer in the fruiting stage: The shallow water layer at the heading stage is 3-5 cm, and the combination of dry and wet after heading will lead to premature leaf senescence, affecting grain plumpness and water depth, affecting root activity, and affecting grouting. After flushing, foliar fertilizer or potassium dihydrogen phosphate can be sprayed to promote early maturation and grain size. Spray chemical agents to control rice blast. Spray chemical insecticides to prevent bites from insects on functional leaves and increase photosynthesis utilization. Intermittent irrigation, early wet, late dry. Do not water irrigation, water is not water shortage, alternating wet and dry, rooting to gas, root to protect the leaves, and promote high yield.
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