The reason for the lack of seedlings of the latest onion
When growing onions, it is easy to encounter the lack of seedlings, which leads to the later production can not go up, thus affecting everyone's income problem. In fact, the lack of onion seedlings is mainly caused by the following reasons, let's learn about it.
1. Soil factors
The soil needs to be treated before onions are planted, and if the treatment is not careful enough, there will be a lack of seedlings. For example, if the clods are bonded together and there is no good loosening of the soil, it is very difficult for the roots of some onion seedlings to penetrate into the soil layer when they are planted, and if they cannot absorb nutrients, the seedlings will eventually die, and there will naturally be a lack of seedlings.
2. Temperature factor
The planting time of onions is generally not too late, otherwise it is vulnerable to low temperature, and the lack of seedlings will naturally occur after some weak deaths. If you plant in spring, you should avoid planting prematurely, wait for the temperature of the land to warm up to a certain extent, otherwise the seedlings will freeze to death directly, and in autumn, it may be due to late planting, immature roots, weak cold resistance, and the rapid decrease of land temperature leads to the death of seedlings. This is also one of the more common reasons leading to lack of seedlings, so we should grasp the temperature, especially in the greenhouse.
3. Seed problem
Onion seedlings also need to be treated before planting, to identify some of the inferior seeds, but this can only identify some more superficial seedlings, some poor seedlings and normal ones are almost difficult to detect. Secondly, these seedlings may be damaged artificially because of storage, and they can survive less naturally when they are planted. The storage of seeds must be preserved by scientific means in order to avoid the lack of seedlings in vain.
4. Lack of nutrients
Onions need both water and fertilizer after planting, which requires more nutrients, but there are many weeds in the areas where onions are planted, so it is difficult to clean them up. As a result, onions are prone to lack of nutrients for their growth, and eventually there will be a lack of seedlings. Therefore, when planting, we must apply enough base fertilizer and weed the soil to reduce the loss of other ineffective nutrients.
These are some of the reasons for the lack of onion seedlings, these can be artificially adjusted, we can be targeted to prevent, reduce the occurrence of seedling shortage.
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