led grow light,grow strip light,grow lighting Shenzhen You&My Electronic Technology Co., Ltd , https://www.szyoumy.com
1. Apply enough organic fertilizer. The addition of organic fertilizer is an important measure in the cultivation of high quality rice and is the basis for achieving high quality and high yield. Organic fertilizer is mainly used as the base fertilizer. Generally, 40-50 tons of succulent mature soil per acre is applied before ploughing, or 40-50 kg of cake fertilizer. In addition, 40-50 of human and animal manure can be applied as a noodle fertilizer before ploughing and watering to ensure the nutrient needs of the seedlings after they are transplanted.
2. Control the amount of nitrogen fertilizer. Excessive application of nitrogen fertilizer will not only cause ineffective tillering, greed, lodging, and intensification of pests and diseases, but also lead to more empty mites and lower seed setting rate, which will affect rice yield. Nitrogen fertilizer is mainly used as top dressing. Generally, 6-7 kg of urea per mu is applied after transplanting rice. The second time is 13-5 days after transplanting, and 4-5 kg ​​of urea per mu is combined with the cultivated field to benefit the hair. Hey. In the medium term, attention should be paid to water control and fertilizer control. Only the second and third types of seedlings with poor growth should be used to supplement some balanced fertilizers. In the later stage, the seedlings should be supplemented with 3-5 kg ​​of grain fertilizer.
3. Increase the application of phosphorus and potassium fertilizer. Phosphate fertilizer is suitable for base fertilizer, and potassium fertilizer is better for topdressing. Generally, 20 kg of phosphate fertilizer is applied per acre in a field with sufficient organic fertilizer. As a potash for potash fertilizer, 3.5-5 kg ​​of potassium chloride can be applied per mu. Spraying potassium dihydrogen phosphate in the late stage of rice can promote the grouting and firming. Generally, it is sprayed once in the late stage of flowering and the filling stage. 150 g of potassium dihydrogen phosphate per acre and 50-60 kg of water are sprayed in the evening.
4, the leaf surface to apply micro-fertilizer. Trace elements such as zinc, manganese and boron can improve the supply of oxygen in rice roots, enhance the resistance of rice plants, improve the disease resistance of plants, promote the development of roots in the later stage, prolong the functional period of leaves, prevent premature aging, and accelerate the development of flowers. Increase the amount of pollen, promote the pollen germination, and help to increase the rate of rice emergence; it can also promote the large number of spikes, increase the seed setting rate and the grain filling degree, thereby increasing rice yield. According to the test, in the case of the same cultivation and management measures, the application of trace element fertilizer can increase the yield by 40-50 kg per mu, and the application of trace elements such as zinc, manganese and boron in rice is generally carried out twice. The first time in the peak period, the second time in the completion of the young spike differentiation. The application rates of zinc, manganese and boron fertilizers are 100-125 grams per mu, and the spraying concentration is: one thousandth of zinc; manganese and boron are each five ten thousandths. The application of foliar fertilizer requires a cloudy or sunny afternoon to be sprayed on the front and back of the blade.
Author: HU Qi Mountain
Source: "Agricultural Resources Guide"
High quality rice conservation and fertilization technology
In order to achieve high quality rice cultivation, it is very important to apply fertilizer scientifically. If the fertilizer is applied blindly, even high-quality varieties will cause quality degradation, and it is difficult to obtain high quality and high yield. Therefore, in the process of high-quality rice cultivation, it is necessary to master the fertilization skills. According to local experience, the main points are:
ã€Comment】 ã€Print this article】 ã€Close this page】 ã€Large, medium and small】