First, add warm fertilizer Phosphorus, potassium and boron fertilizers, as well as grass and wood ash, fire-soiled soil, mixed fertilizer, and decomposed pig chicken manure are all considered as warm fertilizers. Appropriate application of fertilizers can increase soil temperature and increase the ability of the crop to resist cold. Second, do a good job of protective measures (1) Coverage. Before the onset of cold, short crops can be planted on the entire plant to prevent cold, tall crops can be made of waste plastic bags net cover, or cover with straw and other cold-proof materials, can increase temperature 2 °C ~ 3 °C. (2) trunk dressing. Before the cold began, straw or plastic film was used to bind the main culms and main techniques of fruit crops, which could effectively prevent the occurrence of frost damage. (3) Rootstock soil. Pre-frozen crops with high ridge soil, the effect of cold is also very good. (4) Water before freezing. If the drought is severe in autumn and winter, it is possible to infuse the water once before the severe cold. If conditions permit, it can be re-irrigated before the arrival of cold air, and the effect is better. After the crops have been frozen, the leaves are deprived of water. It is also necessary to irrigate the water immediately to prevent the plants from losing water and die. Third, smoke and cold Before the onset of low temperatures or on the frosty night, weeds, husks, sawdust, dried foliage, or other smoked objects are smoked in crop fields. Each pile of 3 to 5 piles of acres, smoke around 10 pm, smoked marriage time of 6 to 10 hours is appropriate. Fourth, spray antifreeze Spraying plant antifreeze is one of the methods for disaster reduction with the advantages of labor saving and antifreeze. The use of temperature above -5°C can avoid frost damage to crops. Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone low speed handpiece,dental low speed handpiece,low speed dental handpiece Foshan Ja Suo Medical Device Co., LTD , https://www.jasuodental.com