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Rapeseed meal is the main organic fertilizer used for organic cultivation of rice in the central region. The ratio of nitrogen:phosphoric anhydride:potassium chloride is 5.3:2.3:1.3. Rapeseed meal is an unfertilized organic fertilizer, so its application rate and application period should pay special attention. Rapeseed meal is applied in rice cultivation. The recommended amount is 4,000 kg per hectare. 1/2 is used as base fertilizer. It is applied about 10 days before land preparation. It can not only avoid the high temperature generated by rapeseed meal fermentation after rice transplanting. Hazard, and timely and appropriate amount of nutrients required for rice growth; 1/4 as a top dressing, timely and appropriate amount of fertilizer to absorb the absorption of nutrients during the vegetative growth, at this time the roots and shoots of rice have grown very vigorous, not afraid of vegetables High temperature hazard caused by seed meal fermentation; 1/4 is used as panicle fertilizer, general rice cultivation, panicle fertilizer is most suitable when the young ear is formed at about 0.2 cm, but the application of organic fertilizer takes time to mineralize and can be released. Nutritional ingredients, therefore it is recommended that the first phase should be about 8 to 10 days before the formation of young ears, and the second phase should be applied about 6 to 8 days before the formation of young ears.
Organic fertilizer should be avoided after the ear formation period, so as to avoid excessive nitrogen supply during grain filling, which not only makes the rice plant easy to fall, but also increases the crude protein content in the grain, which is not conducive to rice quality. Improvement.
Application technology of organic fertilizer
If organic fertilizer can be manufactured by itself, it is the most economical cost, but the actual implementation is not easy. The organic fertilizers with higher market prices, such as rapeseed meal, peanut meal and other high nitrogen content plant organic fertilizers, are more economical.
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