In order to reduce the adverse effects of severe weather on growing vegetables, the Bureau of Commerce of Yantai City recently released the opinions on vegetable production management, reminding growers to pay attention to weather changes, and preventing severe adverse weather such as strong winds and spring colds. .
1. "Cotton" early cover and keep the light
The spring is cold and chilly, and the dress is about spring and autumn and autumn, and folks' “earthwork†is also applicable to the production and management of greenhouse vegetables. Relevant experts said that under the premise of ensuring the temperature of the greenhouse, the grass sheds should be exposed as soon as possible to extend the lighting time of vegetables. Spring is relatively dry, people need to add more water. Vegetables are no exception. It is necessary to adjust the water supply in a timely manner. The greenhouse shall be covered with mulching film. Watering shall be carried out by means of under-membrane irrigation or drip irrigation. The time shall be selected on a sunny morning.
2. Seedlings emerged early as early as possible to cultivate strong seedlings
To prepare in advance for the defense of cold spells, we must focus on the three technical links of “cold protection, disease prevention, and seedling development†to prepare land for seed and seedbed as early as possible, adopt measures such as warming and supplementing light, and strive to raise seedlings early and emerge early. .
In the breeding process, we must use disease-resistant varieties, use warm soup soaking, vents cover insect nets, use non-bed soil as nutrient soil, avoid seedbed high humidity, timely spraying and other measures to prevent disease; full bed fertilizer, grasp the seedbed Temperature and humidity management, low-temperature hardening before planting 3 to 5 days, etc., to cultivate strong seedlings, lay a good foundation for the spring vegetable production.
3. Prompt ventilation, improve the ability to resist cold
After the vegetable seedlings are in full swing, the seedbeds shall be ventilated in time to improve the cold resistance of the seedlings, and at the same time, additional protection measures shall be added, such as setting up wind barriers, planting vegetables and covering the plastic film. At the time of the cold spell, countermeasures such as smoking can also be taken. Before the advent of the cold current, cultivators can also be cultivated. After the rammed soil is loosened, solar thermal energy can be better absorbed and stored to effectively mitigate freezing damage.
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