Fertilizer at tillering stage: The purpose is to increase the number of panicles by applying sub-fertilizer early on the basis of fertilizing the basal fertilizer, generally within 5-10 days after transplanting (after field water clearing), in order to promote tillering and improve the rate of success. Increase effective ear. The amount of fertilization depends on the level of paddy field fertility, the base fertilizer, and the planting density. If the paddy field has high fertility, sufficient base fertilizer, and high planting density, it is necessary to prevent excessive development of the population and premature closure of the paddy. Appropriate increase in panicle fertilizer to improve the rate of ear formation.
Fertilizing during the development of young panicles: also known as panicle fertilizer, its purpose is to consolidate the effective delivery and promote the increase of the number of panicles. Method: It is divided into two types: promoting flower fertilization and flowering fertilizer; generally using preserved flower fertilizer, that is, when the young panicle has a length of 1.5 cm, it is applied with preserved fertilizer, and the general dosage is about 5 kg/mu of urea. Seedlings, depending on the day, the general seedlings do not fade, and the weather is not rainy. Fertilizer is applied during the period from cob differentiation to spikelet differentiation to increase the number of spikelets per panicle. Panicle fertilizer also increases the nitrogen content of the last three leaves, preventing premature aging of leaves and roots.
Granular fertilizer: The purpose is to prolong the functional period of the leaves, increase the photosynthetic intensity, increase the grain weight, and reduce empty grains. Method: Topdressing nitrogen fertilizer (3 kg of urea per acre, the specific amount of leaves to see the color) or foliar spray nitrogen or nitrogen phosphorus potassium mixture.
In addition to fertilizing the soil, the rice-spraying fertilizer has a certain effect and is an effective measure to supplement the nutrition of late rice.
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