Management of Flower Bud differentiation in Litchi

First, protect functional leaves. Autumn shoots play an important role in flower bud differentiation, flowering and fruiting. While controlling the shoot and promoting the flower, we should pay attention to the prevention and control of diseases and insect pests and protect the intact autumn shoot. Second, kill the winter shoot germination, causing the plant to change from reproductive growth to vegetative growth, consuming nutrients, so it should be removed manually, or killed by chemical agents. (1) spray 40% ethephon 10g 12ml plus 15% paclobutrazol 15g with water 15kg. (2) Special flower promoter for litchi (developed by Fruit Research Institute of Guangdong Academy of Agricultural Sciences) 1 packet of 35 kilograms of flushing water. (3) due to the consumption of certain nutrients, litchi special flower promoter 1 packet plus nucleotide and 1 packet of flushing water 50 kg spray can be used to supplement the nutrients consumed by shoot flushing, improve photosynthesis and benefit flower formation. (4) Litchi shoot control flower promoting hormone No. 2 (developed by the Institute of Fruit trees of Guangdong Agricultural University) l small bag, flushing 400 kg spray. Third, when sprouting slightly in winter, because there were many Rain Water and high underground humidity some time ago, once the temperature suddenly rebounded, individual plants had the possibility of sprouting. If the temperature rises, attention should be paid to inspection and observation, and it is found that there is winter shoot germination. 15% paclobutrazol 750-fold solution can be used to inhibit winter shoot germination. It is best to spray a little at the growth. Should not be overweight, overweight will affect the formation of flower organs. 4. Root control, root control and root control. Because after cutting the root and picking up the soil, after light, coupled with the recent two water, high humidity, the root cytokinin increases and is easy to shoot. Litchi has a wide range of cultivation, in different regions, the climate is different; different soils, different soil fertility is different; different people, the level of management is also different. There are also different varieties, the physiology of the tree itself is different. Each region should be based on the local reality, combined with the growth of various varieties, orchards and plants, timely, appropriate amount of medicine, tree potential growth is vigorous, the drug concentration (not more than the recommended dosage) is higher, the growth potential is weak, the drug concentration is lower.