Green onions are common seasonings in people's lives. In some areas, meals are inseparable from green onions. The annual price of green onions is also relatively large, mainly related to factors such as yield, quality and demand. Today, let's take a look at the reasons why green onions are planted with rotten roots. How to prevent it?
1. Prevention points
In the process of planting green Onion, it is necessary to carry out a certain number of soil cultivation. Before the soil is cultivated, some biological fertilizer can be applied with water at the time of watering, in order to inhibit the invasion of pathogenic bacteria, and 58% of metalaxyl manganese zinc can also be used. 600-800 times liquid or 70% glacial urea cyanide manganese zinc 800-1000 times liquid irrigation root can all reduce the occurrence of green onion roots.
2. Rotation
Scallion is also a kind of root rot that is easy to grow due to heavy planting. Continuous planting is repeated. The more the disease sources accumulate in the soil, the more the rain is added, and the growth environment of the roots of the scallions in the soil becomes bad. One of the most prone conditions for scallions.
Control measures: To avoid long-term heavy crop rotation, or to use the drug spray in the early stage of planting, deep-turning and reducing the source of the disease in the soil can be done to reduce the roots of the green onion.
3. Pests and diseases
Pests and diseases can also cause the occurrence of rotten roots on green onions. Like our common cockroaches and onions, they are pests that have a great impact on the root system of scallions.
Control measures: For the onion pests, early detection, early prevention, drug spraying, or light trapping, etc., can be used to eliminate the disease.
4. Weather reasons
Green onions are typical drought-tolerant and infertile, especially during the vigorous growth of green onions, which is the season when the rainy season arrives. During this period, rainfall is frequent. If you encounter a rainy year, plus the green onions, the drainage is not very smooth. The leeches cause the soil to be too humid, and the high temperature combined with the high-humidity root growth environment makes it difficult to induce rotten roots.
Control measures: In the early stage, the drainage system of green onions should be done to avoid the accumulation of water due to large precipitation.
The above is the reason for the roots of green onions and the prevention and control measures. Although the green onions are particularly drought-tolerant, they also affect the green onions, which causes the green onions to rot.
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