Longan: spike in time after low temperature

Longan is in the late stage of flower bud differentiation and the early stage of budding, and its main work is to promote sprouting, pick out flower ears in time and prevent "sprouting". At present, the normal growth of longan in Hainan Island has begun to show buds, while the orchards treated with flowering have appeared "sprouting" under the influence of the high temperature in the previous period, but the recent low temperature is good for these orchards. Longan has begun to sprout or has not yet sprouted in Guangzhou. After this low temperature, most fruit trees with normal autumn shoots should begin to sprout or bud. ① was watered and fertilized. Mountain orchards or orchards that lack water in the soil should be watered once if conditions permit. Apply fertilizer after watering and try to start budding in late January or early February. If the fertilizer application ditch is dug in the shoot control stage, it should be fertilized immediately, and then drenched with water to restore the vitality of the root system and pick out the flower ear in time. ② promoted flower bud differentiation. Orchards with late mature autumn shoots or weaker trees can be sprayed with agricultural nucleotides or cyan cytokinins twice to enhance flower bud differentiation. ③ thinning branches. The bud can be thinned at the beginning. If the crown is too dense, it will not only cause diseases, but also affect the light of flowers and the quality of flowers. It can remove shade branches and weak branches, increase the ventilation and light of the crown, which is beneficial to the growth of fruit. ④ if there is a "flush", when the first leaf is just unfolded, spray the tip control spirit once, so that the leaves stop growing and the flower ear is drawn out. Only when the leaves stop growing can the buds grow normally.