In recent years, a large number of vegetable farmers have increased the use of chemical fertilizers, especially nitrogen fertilizers, in order to increase the production of scallions. According to the survey, the average pure nitrogen per acre lush onion is as high as 40 to 50 kilograms and phosphorus pentaphosphate 10 to 15 kilograms, while the use of potash fertilizer is minimal or even absent. As a result, welsh onion yield does not increase, and root rot aggravates. . Excessive application of nitrogen fertilizer on scallion and little application of potassium fertilizer can easily lead to imbalance of nitrogen and potassium nutrition in onion. Since 2011, the scientific and technical personnel of the Sheqi County Agricultural Technology Center organized the onion fertilization trials at the onion camp and the summer and lazy village green onions base. According to the experimental results and the principles of soil testing and formula fertilization, the onion fertilization put forward “green onionsâ€. To improve the quality, to obtain high yields, and to reduce nitrogen and potassium, which is the key†theory, the promotion of this fertilization technology has led to an increase in yield of local scallion production by an average of 20% or more per mu, and has received noticeable results. Specific fertilization methods are described below:
1. Welsh onion is a long-lived Liliaceae vegetable crop. In China's Huanghe-Huaihe River Basin, scallion cultivation generally adopts two planting modes: 9 to 10 months of nursery, 2 to 3 months of transplanting, 5 to 6 months of harvesting onions or onions, 3 to 4 months of nursery, 6 months of transplanting, and autumn. Harvesting onions in winter. During this period, it is necessary to experience different growth stages such as seedling stage, transplanting seedling stage, leaf stage and multiple rooting, light blue formation stage, etc. Weighing 3,000 to 6,000 kilograms of scallion is a high yield, and high yield scallion is nitrogen, phosphorus and potassium. The ratio of nutrient uptake is about 1:0.4:1.3, which shows that Chinese green onions have more potassium and nitrogen requirements, and phosphorous takes the second place. Therefore, in the proportion of fertilization, we must pay attention to the balanced supply of potassium. Especially in the conditions of high-yield cultivation and no application of organic fertilizers, more attention should be paid to applying potassium fertilizer. As for the specific amount of potassium, the proportion of nitrogen and potassium fertilization depends on the following three aspects: The first is the ability of the soil itself to supply potassium, for example, the ability of the sandy soil to supply potassium is low, and the amount of potash used should be appropriately increased; Depending on the target yield of welsh onion, and if the yield per mu exceeds 10,000 catties under the high-yielding level, the output of scallions will have more potassium from the soil per season. Therefore, the potash fertilizer should be increased accordingly. Third, other fertilizers Dosage, such as the amount of straw returned to the field, the amount of nitrogen fertilizer, if you put a lot of organic fertilizer, you can apply less potassium fertilizer, in particular, the amount of chemical nitrogen fertilizer should be appropriate, and with the appropriate balanced application of potash fertilizer, have a good effect of increasing production. Otherwise, blind investment will not only be of no benefit to the high yield of green onions, but also cause the quality of green onions to decline, such as small proportion of light blue, leafy, not strong onion, and even bitter.
2. Generally, the recommended amount of nitrogen for scallion planting is about 20 kg to 26 kg per gram of pure nitrogen, too much nitrogen fertilizer applied, plus a large amount of water, not only a waste of nitrogen fertilizer, raising the cost, but the output of green onions intolerant storage , quality decline, but also because of the loss of nitrogen, have a negative effect on the environment. Therefore, the amount of nitrogen fertilizer should be appropriate. In the selection of nitrogen fertilizer varieties, the most common is urea, but the most suitable type of nitrogen fertilizer is ammonium sulfate because it is a sulfur-loving crop.
3. There are also exquisite methods for fertilizing scallions. Full fertilization should be divided into two parts: base fertilizer and top dressing. The best basal fertilizer is between 4,000 and 5,000 kilograms of mature high-quality organic fertilizer, which is used to spread the ground and plow the soil. Fertilizer base fertilizer should be applied to all phosphate fertilizers, 40% nitrogen fertilizer and 60% potassium sulfate fertilizer, and the varieties can be compound fertilizer or single fertilizer. In the selection of compound fertilizer, sulfur-based general-purpose or special-purpose type can be used, and high-nitrogen type compound fertilizer is not suitable. The base fertilizer must have a depth of 15 cm. The top dressing of green onions can be divided into 2 to 3 times, and the remaining 60% of nitrogen fertilizer and 40% of potassium fertilizer of basal fertilizer can be used as top dressing in the middle and early stages of the Shengye period and the light blue period respectively. The method of top dressing is the best with the combination of water and fertilizer. Avoid large nitrogen and large nitrogen flushing, which will not only cause low fertilizer utilization, but also spread urea on the surface in the summer. Nitrogen volatilization can easily cause smoked leaf burning.
The color of Vacuum Fried Onion Flakes is same as fresh onion Flakes.
Wanyuan Garlic Foods has specialized in VF,FD and AD Vegetables since 2005.Wanyuan Garlic Foods get a patent for Vaccum Fried Onion products.
Crispy VF Onion Flakes can be eat directly as snacks and in cooking.
Vacuum Fried Onion Flakes
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