Is the cold wave beneficial to agricultural breeding and elimination of pests and diseases?

The cold wave is not conducive to agricultural cultivation. Cold wave will bring frost, make plants wi

Is the cold wave beneficial to agricultural breeding and elimination of pests and diseases?

The cold wave is not conducive to agricultural cultivation. Cold wave will bring frost, make plants wither or die, and also lead to the decline of animal immunity, which will lead to diseases. When the cold wave occurs, it is necessary to strengthen scaffolding facilities, clean and drain rape and citrus orchards in low-lying areas, cover leafy vegetables with straw, and cover vegetable or flower greenhouses with straw mats, double-layer films and other thermal insulation materials, which can prevent freezing injury and reduce the degree of freezing injury.

One is whether the cold wave is beneficial to agricultural breeding.

1, the cold wave is not conducive to agricultural cultivation, because the cold wave will bring frost, at this time, the temperature will drop below 0℃, and the water in the cells will continue to penetrate outward, thus causing dehydration of the cells, leading to partial withering or complete death of the plants. The cold wave will also cause a sudden drop in temperature, leading to a sharp decline in animal immunity, which will lead to epidemic diseases.

2. Because the wind is relatively strong when the cold wave comes, it is necessary to strengthen scaffolding facilities to prevent scaffolding from collapsing or the wind from lifting the shed membrane to aggravate the freezing injury, and control the temperature and humidity.

3. For rape, green manure and citrus orchards in low-lying areas, attention should be paid to clearing ditches and draining water stains to prevent accumulated water from freezing and aggravating freezing injury, while leafy vegetables can be covered with straw to keep warm, which can reduce freezing injury. Vegetable or flower greenhouses are covered with straw mats, double-layer films and other insulation materials, thus increasing the temperature in the greenhouse.

4. Poultry and livestock farmers should do a good job of cold protection and heat preservation in poultry shed, and increase the illumination time in poultry shed, which can improve the egg production rate, while the breeding pond needs water injection to adjust the temperature and appropriately reduce the feeding amount.

Second, is the cold wave conducive to the elimination of pests and diseases?

1, crop pest control experts believe that the low temperature brought by the cold wave is more effective and natural? Insecticide? , can kill a large number of pests and germs lurking in the soil for the winter, and can also inhibit their reproduction, thus reducing pests and diseases in the coming year. According to the survey data of agricultural technology stations around the country, pesticides can be saved by more than 60% in the year of heavy snow and winter closure.

2. Cold wave is a natural weather phenomenon, which refers to the cold air from high latitudes, which is rapidly strengthened in a specific weather situation and invades the middle and low latitudes, causing a wide range of severe cooling, strong winds and rainy and snowy weather along the way. When this cold air invades the south and reaches a certain standard, it is called a cold wave.

3. During the cold wave, plastic film can be used to protect the above-ground or underground parts of plants that are afraid of freezing, reduce the long-wave radiation on the ground, defend against the cold wind, and play a cold-proof role.

4. Chemical agents can also be sprayed to prevent freezing injury, and growth hormone can be used to control the growth law of fruit trees and enhance frost resistance. Chemical methods to prevent freezing injury are emergency measures, and short-term cold wave cooling forecast should be mastered before spraying.