Cold-resistant psidium guajava cultivation method

The invention belongs to the technical field of agriculture and particularly relates to a cold-resistant psidium guajava cultivation method. Before cold weather in autumn and winter, psidium guajava tree trunks and soil are treated with protective liquid and a protective agent respectively. The protective liquid is prepared from, by weight, 20-30 parts of clay, 8-10 parts of lime, 8-10 parts of bean sprout wastes, 10-15 parts of seaweed and 6-8 parts of chitosan. The protective agent is prepared from, by weight, 50-80 parts of sludge, 100-120 parts of mushroom residues, 50-80 parts of coal ash, 10-20 parts of kaolin and 20-30 parts of waste ceramic particles. By use of the protective liquid and the protective agent, heat energy of solar radiation in autumn and winter can be well absorbed,early maturing of guavas in autumn and winter in the Guangxi region is promoted, guava yield can be increased, and high benefits are achieved. 本发明属于农业技术领域，尤其是一种珍珠番石榴抗寒冷的栽培方法，是在秋冬季节寒冷气候到来之前，采用防护液和防护剂分别处理番石榴果树主干和树盘；所述防护液按重量份计由2