The flowering conclusion of litchi technology will be harmed by many factors, generally the internal cause is its own physiological fruit drop, and the external cause is temperature, natural environment, nutrients, water and other factors. But whatever the reason, as long as it is to maintain the good situation of litchi technical flowering conclusion, it is necessary to learn and train some technical measures to protect flowers and fruits to avoid and adjust. So what should be done to solve this problem reasonably? Share it with everyone.

1. Fertilize at the late flowering stage to give flowering nutrition. Fertilization is generally to apply high-efficiency compound fertilizer 1 ~ 2 kg under the open ditch of each plant, and spray 0.2% mannitol on the leaves half a month before flowering. In addition, some branches can be pruned when flowering, and bees can be raised in the plantation to improve the pass rate of pollination and fertilization.

2. Temperature control If flower thinning is needed due to sudden ultra-low temperature, the application concentration of flower thinning agent should be reduced. If it keeps raining at ultra-low temperature, NAA can be sprayed to slow down the flowering process. If there is a sudden continuous high temperature, you need to spray some water on the flowers to avoid water shortage. Bees can be raised in plantations to improve the pass rate of pollination and fertilization.

3. When the flowers remain in the flowering period, 2,4-D combination chlormequat chloride can be used to spray the leaves to adjust the flowering balance. After flowering, you can cut off a part of the spike, and then remove the leaves around the spike to prevent competition for nutrients.

4. Generally speaking, fertilizer should be applied once before each physiological fruit drop, compound fertilizer should be applied, base fertilizer should be applied less, and phosphorus and potassium fertilizer should be applied mainly. You can also spray some phosphorus and potassium fertilizers on the leaves for rapid digestion and absorption. In case of drought, water the trees in time to ensure the water content and prevent the fruit from falling due to lack of water. You can also girdle and deposit nutrients in the early stage of conclusion to ensure that nutrients provide fruits. In addition, spraying NAA is also very simple and quick, generally spraying auxin at Peng Da stage, or spraying auxin when pistil is one month behind.

5. The key to disease prevention is to avoid downy mildew, carbon maggot disease, bed bugs and borers, and spray some mancozeb or Baitai chemicals before budding. Trichlorfon and other pesticides are alternately used to control pests during the hundred fruit period.