It is very common to grow vegetable fields in rural areas. Once you increase your income, you can still leave your own food. In the village, Huang’s young man cultivated some vegetable seedlings in his own vegetable field some time ago. Because he had no experience in growing vegetables, he did not manage the seedlings in peacetime. When he went to see the vegetable seedlings, he found that the vegetable seedlings were a bit wrong. It was pulled out, and it was found that the seedlings had no root hair, some root skins appeared yellowish brown, and some of the main roots and fibrous roots showed decay.
So he looked for Zhang Dashu, who was experienced in planting vegetables in the village. After listening to his description, Zhang Dashu said that this is the root disease of the vegetable seedlings. It is caused by unsuitable climatic conditions during the seedling raising period, long-term rain or It is snowy day, so that the seedbed can not be ventilated and lighted in time, the light is insufficient, and the bed temperature is lower than 15 °C, and the duration is longer, the soil in the seedbed is too wet, and the roots of the vegetable seedlings are deprived of oxygen, which will cause the seedlings to not be new. Root, induced disease. It is necessary to prevent this disease when it is discovered:
First, the seedbed should be level, without water, when watering, it is necessary to prevent flooding.
Second, when the early spring nursery ground temperature is low, the geothermal line can be used to raise seedlings to improve the ground temperature to control the occurrence of diseases.
3. When the seedlings are slightly rooted, it is necessary to immediately control the watering and timely loosening the soil to increase the ground temperature, and at the same time apply the hay wood ash to the seedbed.
Fourth, strengthen seedbed management, control seedbed temperature, avoid low temperature and high humidity, accurately grasp the ventilation time and ventilation, keep 20 to 25 °C during the day and about 15 °C during the night to create the growth environment of seedlings.
How do you think of these kinds of prevention methods? Do you have a better way to prevent it? If you want to know more about agricultural technology, please pay attention to the Hui Nong School!
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