The rice filling stage is a critical period for determining the yield. Field management should aim at raising the roots, preventing premature senescence, increasing photosynthetic efficiency, promoting grouting, increasing seed setting rate and grain weight. First, make up the grain fertilizer to see the seedlings, see the fields, see the sky use granular fertilizer. Yellow leaves, small flag leaves should make up, dark green leaves, flag leaf hypertrophy; Shi Tian Shi Shi, fertilizer field is not applied, sunny and more make-up facilities, overcast and rainy days are not Shi. Generally, it is appropriate to apply 2-3 kg of urea per acre during the breakout period. Second, reasonable irrigation Irrigation reasonable irrigation period, can support the roots to protect the leaves, reduce empty grains and pods. Heading the flowering field to maintain a certain water layer. The filling stage is mainly moist, and the dry, wet and wet gaps are irrigated, that is, they are naturally drained for 1 to 2 days after the water and then watered to maintain the vitality of the root system. Poorly permeable sandy loam is often prematurely dehydrated due to lack of water, so this method should not be used and thin water layers should be maintained. During the flowering period, when the temperature is high or during the fertility period, the temperature should be adjusted as early as possible by deepwater irrigation to reduce empty grains and granules. The water should not be cut off prematurely before harvest. Early rice should be cut off 4 to 5 days before harvest, and the middle and later rice should be cut off 6 to 7 days before harvest. Third, do a good job of "four defenses" 1. Prevent pests and diseases. The major pests in this period were rice blast, bacterial blight, rice smut, sheath blight, rice leaf roller, rice planthopper, etc. The field crops with a large total number of stems and strong growth should be used as control measures. Focus on catching rice breaks to prevent and control during critical periods. 2, prevent lodging. Rice lodging mainly occurs during the fruiting period. In addition to strengthening the management of fertilizers and water and preventing pests and diseases, it is also possible to spray 3% superphosphate soaked liquid on the Wangchang block for several times. When the panicle is about to be used, 40 ml of corn will be added to 40 ml of water. Spraying kilograms inhibits the elongation of internodes under the ear and enhances lodging resistance. 3, anti-greed. For fields that grow too tender, the leaves are hypertrophied, and the flag leaves are covered, 500 mg/kg of ethephon is applied during the milk ripening period to promote aging. 4, prevent premature aging. In addition to increasing grain fertilizers and strengthening water slurry management, it is also possible to spray 2% urea and 0.3% potassium dihydrogen phosphate solution on the foliar, and spray triadimefon and green leaf pioneer mixture at the later stage, which can significantly protect the leaves from decay.
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