I. Water Management: The jointing and booting stage of rice is the period in which it grows fastest and takes the most water, and it is also the weakest period of drought and cold. If water is scarce at this time, young panicle differentiation will be affected, resulting in short, small grains, and more empty grains. Therefore, to properly deepen the water layer, generally can maintain 6-8 cm. If the temperature is lower than 18°C ​​at this time, it is necessary to deepen the water layer to 15-20 cm to protect the developing young ears from deep water and prevent the occurrence of chilling injury. Immediately after the low temperature, 6-8 cm water layer should be restored. The heading period of 3-5 days, when the development of all parts of the panicle is completed, it is necessary to drain the soil in time, and it is better to dry to the field surface without cracks, and it is advisable for the rice to turn green and turn yellow. Second, fertilization management: Spike fertilizer is best divided into two. The first panicle fertilizer is suitable for about 20 days before heading. If the medium-term good land should be delayed, the panicle fertilizer period should be appropriately delayed. It is advisable that the first 15 days before panicle application. 10 kg, while applying appropriate amount of potassium fertilizer, can be used 1000 times per kg of potassium dihydrogen phosphate 50-70 kg for extra-root fertilizer. This fertilizer should not be applied too much and too late. In normal-yielding rice, the leaf color 4-5 days before emergence is temporarily “falling yellow.†If you do not see “yellow fall,†it means that the first time the amount of panicle fertilizer exceeds the appropriate amount, it is advisable to reduce the amount of fertilizer in the second year. In addition, the soil with high fertility and excessive growth in the mid-fertility period does not apply the first panicle fertilizer or reduced application. The appropriate period for the second fertilization is when the rice grows into the booting stage. When the leaf color turns yellow 5 to 10 days before heading, Mushi ammonium sulfate is 5 kg. After applying the first panicle fertilizer, when the leaf color has not declined, the second panicle fertilizer may not be applied. Plug in the water at the time of fertilization, spread it evenly, and turn it into normal after 4-5 days Collapsible Foot Spa,Foot Spa Bath Massager,Foot Bath Spa Massager,Foot Soak Tub Huaian Mimir Electric Appliance Co., LTD , https://www.mimirfootspa.com