Second, detain the shed in advance. In order to slow down the seedlings after planting the seedlings, it is necessary to reach a suitable temperature for the greenhouse, especially for tomato, eggplant, cucumber and other fruits and vegetables, these vegetables have higher requirements on the temperature and temperature of the ground, requiring 5 to 10 The ground temperature of centimeters should reach above 15 °C, and the minimum temperature should not be lower than 10 °C in order to grow normally. Therefore, 10 days before the vegetable seedlings are planted, the greenhouse should be covered with a plastic film to seal the chamber and raise the ground temperature.
Third, timely planting. The temperature in early spring is unstable, and it is prone to cold weather such as cold spring, strong wind cooling and snow freezing. Vegetable seedlings must pay attention to listening to the weather forecast before planting. It is required to have no cooling and snowy weather within 5-7 days. .
Fourth, strengthen insulation. After the seedlings are planted, it is necessary to strengthen the insulation work to promote the seedlings. 3 to 5 days after planting, the shed should be closed, and the wind should not be released. The daytime temperature is maintained between 28 and 30 °C, and the nighttime temperature is maintained above 20 °C. In the event of strong winds and cool weather, cover the insulation at night to prevent excessive heat dissipation at night, causing the greenhouse temperature to drop too fast. In addition, laying crop straws in the operation line can not only improve the ground temperature, but also reduce the humidity in the greenhouse, which is conducive to the healthy growth of vegetables.
Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone
1. Imported PET film is used, with high transparency, high acid and alkali resistance, and scratch resistance;
2. Reasonable structure, suitable for workers of various head shapes, can directly cover myopia glasses, convenient for work;
3. This product can effectively avoid the infection of the medical staff caused by the blood and body fluid splashing of the virus carriers in the process of receiving medical treatment and accident treatment;
4. Light weight, ergonomic design, built-in soft pad to reduce the pressure of the cap body on the forehead, comfortable to wear, no pressure;
5. The anti-fog performance is good, the PET protective sheet disperses the fog faster than the ordinary film, and a unique fog dispersing port design is added to give you a clear vision at any time;
6. It is firm and reliable to wear, and you will not feel inconvenience when bending over or bowing your head;
7. The protection area is large, the effect is good, and the protection range can reach the entire face. Because of its economical and cost-effective characteristics, it is very popular among users.
[Features of this product]: This product is a new protective product that integrates eye, mouth, nose and nose protection. It is composed of high-transparency anti-fog film, sponge, resin buckle and rubber band. It is suitable for hospitals, dentistry and other health research institutions, pharmaceuticals , food, cosmetics and other industries, wearing it on the forehead can not only absorb sweat, but also relieve the pressure formed by wearing it for a long time. The unique groove sponge design can increase the air flow and increase the comfort of medical staff when wearing it.
Disposable Medical Face Shield,Medical Face Shield With Visor,Medical Face Shield Visor,Medical Face Shield
Jilin Sinoscience Technology Co. LTD , https://www.jilinsinoscience.com