Grass cover shed for strawberry antifreeze
Since the grasshopper is a poor conductor of heat, it can reduce heat loss in the shed and avoid temperature drop. Therefore, straw, corn, wheat straw and other crop straws can be used to make grasshoppers, as long as there is no sun to cover the greenhouse; when the sun is seen, the grasshoppers are removed in time. In addition, before the cold current is approaching, adding grass or corn stover around the shed at night can increase the temperature of the shed by 2 °C ~ 3 °C. When the temperature drops suddenly, a layer of ordinary agricultural film or old film can be added to the grasshopper to improve the heat preservation of the grasshopper and prevent the rain and snow from getting wet.
Coal stove heating, cold resistance and antifreeze
In the strawberry greenhouse, place 3 to 5 coal stoves per acre to heat up. The time starts from 6 pm to 6 am and ends in the next few days. This kind of heating method increases the temperature inside the shed quickly, so the thermometer must be placed in the greenhouse, pay attention to the temperature change of the greenhouse, and the temperature can be suspended when the temperature of the greenhouse reaches about 20 degrees. In order to prevent the influence of gas on the strawberry during the heating process, a smoke exhaust chimney should be added to the coal stove to ensure that the gas is discharged outside the shed or smokeless charcoal.
Improve the insulation of the back wall of the greenhouse
In order to improve the insulation performance of the back wall of the greenhouse, the following measures can be taken: first, increase the thickness of the wall behind the greenhouse; second, put a layer of brick on the back wall; third, build a hollow insulation wall, and fill the hollow part of the wall with straw or polystyrene. The foam board; the fourth is to build a fire wall, which is convenient for warming. This method is suitable for cold areas.
Plastic film covering
When high ridge cultivation is used in the greenhouse, the mulch can be covered on the ridge, which can increase the ground temperature by 2 ° C to 3 ° C, and is also convenient for watering, but the ridge height in the dry area should not exceed 10 cm.
Irrigation before the cold current
The heat capacity of water is large. Even if the cold current invades, the temperature drops suddenly, and the water in the greenhouse is frozen and frozen, which will release a lot of heat. Therefore, the temperature in the greenhouse will not drop too much, so the soil and air in the greenhouse can be improved. The temperature ensures the normal growth of strawberries in the greenhouse.
Spray antifreeze
Spraying on the strawberry with antifreeze can play the role of cold and antifreeze. Recommend Cao Tianzheng strong antifreeze.
Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone
Shower Gel,Shower Cream,Body Shower Gel,Foaming Shower Gel
Guangzhou Lingxue Cosmetics Co., Ltd , https://www.gzlxgj188.com