Weeds are used almost in the shabu-shabu. They are also a kind of vegetables that we often see in the market. Many of them actually grow green onions at home. It can be seen that the cultivation of green onions is not very difficult. What are the technologies that we need to pay special attention to? In addition to the common practice of pest control, there is control of light and temperature.
Green onion has the functions of preventing cancer, increasing appetite, relaxing blood vessels, lowering cholesterol and impotence and yin. Therefore, it is welcomed by consumers. Therefore, we have compiled the fertilization methods for planting green onions. The following details are listed for netizens.
The amount of fertilizer needed for green onions:
Generally, green onions can reach 5000-6000 kg/mu under high-yield conditions. Therefore, the demand for nutrients of green onions is high. Under normal circumstances, for every 1000 kg of green onions, 2.7-3.3 kg of pure nitrogen and 0.5-0.6 kg of phosphorus pentoxide are required. Potassium oxide is 3.3-4.0 kg, and the absorption ratio of NPK is 1:0.4:1.3, which is very sensitive to potassium and nitrogen nutrition.
The principle of fertilization of green onions:
If the planting of green onions is not applied or less potassium fertilizer is applied, there will be a significant decrease in soil available potassium content, and a serious imbalance of nitrogen, phosphorus and potassium ratios, resulting in increased onion pests and diseases, reduced yield, poor quality, and reduced economic benefits of planting green onions.
Applying potassium fertilizer to green onions can promote the growth of green onions and improve the ability to resist pests and diseases. The onion-deficient potassium is slow-growing, the plants are short, the scallions are short, and the yield is low.
Balanced fertilization with green onions has a very significant effect on increasing yield, and can increase the content of vitamin C and soluble sugar in green onions, reduce the content of harmful substances such as nitrates, and improve the intrinsic and appearance quality of green onions.
After years of experimentation, the yield of green onion increased by 22.3%~28.2%, vitamin C content increased by 7.20%-16.0%, soluble sugar content increased by 15.5% and 12.7%, and nitrate content decreased by 22.6% and 26.5%; The increase of income is 1690-2000 yuan, and the ratio of production and application of potassium fertilizer is as high as 72.42 and 40.67:1. The balanced fertilization technology of green onion with the application of potassium fertilizer is about 35,000 mu, with an average yield increase of about 20%.
Spring onion management technology:
1. The total onion of the onion should be removed when it is not open to promote the development and growth of the bud. Some plants are accompanied by buds when they are twitched. At this time, regardless of the flower buds, the flower buds (ie flower buds) of the bud plants will be removed early to facilitate high yield. When removing the flower buds, be sure to protect the buds.
2. According to the climate, it should be poured back into the Qingshui in late March and must be thoroughly poured.
3. In the middle of April, when the seedling height is 15 cm, the seedlings are planted, and the seedlings in the dense place are transplanted at least at the seedlings, and the soil is kept moist and wet. If the seedlings are light green or the leaves have yellow tips, the fertilizers such as urea and compound fertilizer can be applied in stages, and the topdressing should be 2-3 times, and the dosage per acre is controlled at 10-15 kg.
Spring onion management technology is introduced here, pay attention to the use of digging medium-sized ditch transplanted green onions, must be 1-2 times, so that it can grow about 10 cm.
How to grow green onions to produce high yields
1. Do not water and fertilize. Because of the recent rains, Master Zhang chose not to water or fertilize. The reason is that if the rain occurs, the roots of the green onions will be difficult to breathe and the roots will die. Fertilization will cause nutrient loss and increase input costs. Master Zhang believes that the rain will basically end in about 15 days, and then fertilize and cultivate the soil together.
2. Timely cultivating loose soil to promote the growth of the green onion. A few days ago, Shouguang ushered in several rains, and the soil in the scallions was multi-layered. At this time, Master Zhang chose to carry out cultivating and loosening soil. He hired people to loosen the soil and loosen the soil in the planting line. Because the selected tools were right, the soil was also used as a soil.
“After cultivating, the soil becomes more loose, and the growth of the green onions is prosperous. More importantly, after the cultivating, the soil's ability to resist drought and stagnation is further enhanced. As long as there is no large rainfall, the field will not accumulate water. Because cultivating has the effect of cultivating soil, there is no need to worry about the scallions falling when the wind blows." Master Zhang introduced.
Pulling out the wheat seedlings to concentrate nutrient supply plants
"It's not a kind of secret. It is to remove the wheat seedlings growing from the green onions and avoid fighting for the nutrients with the green onions." Master Zhang introduced.
This is the case, because the green onions are grown after the wheat is harvested. How to increase the yield of the green onions and the wheat grains are inevitably dropped when the wheat is harvested, and the wheat sprouts gradually grow over time. The green onions are harvested in the winter, but the wheat can grow after icing, so it must be removed.
"Especially at the two ends of the field, there are many wheat seedlings, because the harvester is mostly turned around here, so there are more wheat grains falling down," added Master Zhang.
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