Fertilizer varieties should be suitable. For example, urea or ammonium nitrate can be used when nitrogen is insufficient in the soil and green leafy vegetables with more nitrogen are planted; in the absence of nitrogen, phosphorus, and potassium, ternary compound fertilizer or potassium dihydrogen phosphate or phosphoric acid can be used. Diammonium and other fertilizers. Appropriate method of application. Before the application of fertilization, the solid chemical fertilizer should be added with water to make a mother liquor, and then water should be added. If solid organic fertilizers are used, they must be soaked for about 10 days in advance, and the juices should be taken with water after decomposed. Many farmers’ friends directly spread solid fertilizers into the fields and water them, resulting in unequal distribution of fertilizers in the fields. Crops with high fertilizer concentrations are subject to damage. Fertilizer concentrations are too low to meet crop needs. At the same time, the use of such fertilizers also causes a great waste of fertilizer. The amount and concentration should be reasonable. Excessive use, high concentration, easy to produce ammonia, nitrogen oxides, hydrogen sulfide and other toxic gases, causing crop poisoning; too little, the concentration is too low, can not meet the needs of crops, can not achieve the purpose of increasing production. Normally, the amount of solid fertilizer used per unit area can be used within a reasonable range of conventional soil topdressing. For special flush fertilizers sold on the market, they should be used in accordance with the attached instructions. Do not use your own free will, so as not to affect the effect and cause unnecessary losses. Temporary Flood Boxwall,Mobile Flood Barrier,Flood Box Wall,Boxwall Flood Barrier Denilco Environmental technology(Suzhou)Co., Ltd. , https://www.wflood.com
The scientific application of fertigation and fertilization should be "three important"
In recent years, with the gradual reduction in the amount of chemical fertilizers, red rice fertilization has been used by farmers due to its advantages of simple usage, easy absorption of crops, and good fertilizer efficiency. It has been widely used in protected greenhouses and has been widely used. Good results. Recently, Liu Cunshou, professor of the School of Resources and Environmental Management at Northwest A&F University, said in an interview with reporters that fertigation is by no means as simple as “fertilizer with waterâ€. The characteristics of different fertigation varieties are different, and the techniques used are also quite different. The principle of application is basically the same as that of topdressing in the soil. In addition to flushing with water, it also pays attention to deep and concentrated application of the soil.