Not only planting green onions, but anyone who knows a little about agricultural planting, probably knows that the fertilizer market is very chaotic, so most people when buying fertilizer, the higher the nitrogen, phosphorus and potassium, the better, if you also choose fertilizer in this way, then you really won't buy fertilizer. Planting green onions must learn to buy fertilizer, sometimes nitrogen, phosphorus and potassium are too high, not necessarily a good thing, comprehensive scientific fertilizer, is the right choice of fertilizer and water!
With the repetition of the cultivation cycle, the soil environment began to gradually become poor, if you rely on nitrogen, phosphorus and potassium alone, it is impossible to regulate the soil environment to support the normal absorption of water and fertilizer by green onions, and the soil is not only lacking in fertilizer, but also accumulating toxins, soFull of green onionsIt is recommended that you should comprehensively consider soil fertility, coordinate the amount of nitrogen, phosphorus and potassium, and supplement medium and trace elements in a timely manner, as well as beneficial microbial flora.
The use of nitrogen, phosphorus and potassium fertilizers should be adjusted according to soil conditions and the growth cycle of green onions. If the problem of compaction is not solved, and nitrogen, phosphorus and potassium are still used, more nitrogen, phosphorus and potassium elements will accumulate in the soil, the compaction will be more serious, and the root system will be more unable to absorb water and fertilizer normally, and the result will be counterproductive;
Pay attention to the use of organic fertilizer, the organic matter content in organic fertilizer is richer, and the fertilizer effect is stable and lasting, it can also play a role in loosening the soil and fertilizing the soil fertility, helping to improve the soil structure, increasing the aggregate structure in the soil, enhancing air permeability, water retention and fertilizer retention capacity, and the application of organic fertilizer can improve soil enzyme activity, improve the living environment of microorganisms, improve the water and fertilizer absorption rate of green onions, and increase yield and quality;
The use of fertilizers containing microbial agents can effectively degrade the residues and harmful substances in the soil, relax the soil, release heat in the degradation process, increase the ground temperature, and alleviate the pesticide residues in the soil.
Multi-functional fertilizer: functional fertilizer can play a targeted effect according to different fertilizer needs, which can repair the soil environment, improve fertility, ensure all nutrients required in the process of plant growth, improve soil pH, supplement the missing microbial flora in the soil, make the compacted soil relax, breathable, lock water, and finally improve the yield effect.
In short, in the process of green onion growth, onion friends should learn to use fertilizer comprehensively and scientifically, and it is impossible to improve the yield and quality of green onion fields by relying only on a single fertilizer.