Fertilization of hybrid rice is indeed different from fertilization of other crops. In general, it should be organic fertilizer and phosphate fertilizer as base fertilizer. Potash fertilizer is mainly used as sub-fertilizer. Nitrogen fertilizer should be used in multiple applications. Special attention should be given to strong and strong seed fertilizer. Specific attention should be paid to the following points:
(1) The basal fate is applied. It has been determined that between 50% and 60% of nitrogen and 70% of phosphorus and potassium are derived from soil in the total amount of absorbed fertilizer in hybrid rice. If there is insufficient fertilization, it will consume too much soil potential nutrients and reduce soil fertility. Increasing organic fertilizer is to maintain and improve The important way of land. The amount of organic fertilizer used accounted for 40% of the total fertilization.
(2) Appropriate amount of early application of fertilizer. Since the root activity of hybrid rice is strong, the new roots are inserted faster. Generally 5 days after early rice insertion, 3 days after late rice insertion, urea can be used to promote tillering, and sub tillage fertilizer should be applied in divided doses for the first time. Mushi urea 6 ~ 7.5 kg; every 7 days or so, according to the seedlings, the poor growth of the plot, make-up the second time Feifei, Mushi urea 4 kg or less. For the plots with less organic fertilizer and potassium deficiency, 5 ~ 7.5 kg of potassium fertilizer was applied per acre.
(3) See seedlings for application of panicle fertilizer. Panicle fertilizer can be divided into flower-promoting fertilizer and flower-preserving fertilizer due to different application periods and effects. For those with proper early fertilization and balanced growth of seedlings, the emphasis should be on increasing the size of preserved flowers, and only applying fertilizers and applying fertilizers should not be excessive. Generally, about 2.5 kg of urea is used per acre. If the pre-fertilization is insufficient, the number of seedlings in the group is too small, and the individuals have poor growth potential, then both the stimulating fertilizer and the preserved fertilizer can be applied, and 5 kg of urea can be applied per acre. The demand of potash fertilizer for hybrid rice is large, and combined with topdressing nitrogen fertilizer after rejuvenation in the field, 2.5 kg of potash fertilizer is applied per acre, and the yield increase effect is significant.
(4) To see seedlings, apply fertilizer and foliar fertilizer before heading. Seedlings with pale leaf color, 2 to 2.5 kg per acre of urea, and a field of premature yellowing after full panicle application, 2.5 to 3 kg of urea per acre; normal hybrid rice, only 500 should be used. ~ 750 kg of urea is sprayed with 50 kg of water as granular fertilizer. Because the absorption of P and K is relatively high in late hybrid rice, late-stage foliar fertilizer has a good yield-increasing effect. In the 4 to 6 days before the first panicle or 2 to 3 days after the panicle, the poorly growing seedlings were sprayed with potassium dihydrogen phosphate 150-200 kg watered to enhance the ability of the plants to resist high or low temperatures. (Li Zhuang)
Dehydrated Garlic,Fried Garlic,Dried Garlic,Vacuum Fried Garlic
Huaiyang County Wanyuan Garlic Foods Processing Industries Co.,Ltd , https://www.wanyuangarlicfood.com