Key points of litchi management in spring

1. Clear the garden thoroughly. First of all, cut off the overdense weeds and trees around the orchard and clear them out of the orchard; secondly, cut off the overdense branches and disease and insect branches inside and outside the tree hall and clear them out of the orchard; thirdly, the whole garden sprayed 600 times of trichlorfon + 600 times of Yunsheng liquid to remove overwintering eggs and germs. Try to irrigate orchards with water. 2, black leaves, Feizixiao, white wax and other mid-precocious varieties have not yet exposed white spots, it is necessary to spray the whole tree fruit twice in time to promote early flower branches (spray once a week), March red varieties will now spray Jinyunda-120 strong flowers, because Jin Yunda-120 can mobilize the nutrients stored on the trunk branches to concentrate to the reproductive organs (buds), which is conducive to the growth of buds. For the late-maturing varieties of glutinous rice, cinnamon and Huaizhi, spraying the whole tree fruit at one time can promote the morphological differentiation of flower buds, which is beneficial to the emergence of strong flower branches. 3. When 70 or 80% of the trees in the orchard sprout flowers and branches, spray Jinyunda-120 + flat mites + trichlorfon or Anzhi once in the orchard to strengthen flower buds and prevent litchi gall mites and litchi stink bugs from harming flowers and ears. When there are more litchi stink bugs, the second and third spraying should be carried out in time, and Anzhi + trichlorfon and high-efficiency trichlorfon can be sprayed in turn. If you encounter rainy or foggy weather during the flower bud stage, spray 2Mel 3 times with 80% Yunsheng 600 times to prevent Phytophthora and anthracnose. Mainly spray flower spikes and spring shoots. 4. Orchards with conditions for flowering can be pollinated by bees, usually without pesticides, especially pesticides, but in case of heavy fog and rainy weather, 80% Yunsheng spray can be used twice to prevent the spread of anthracnose and downy blight. 5. When there are more than 70% of the flowers in the orchard, you should begin to protect the fruit. 1500 times spray of whole tree fruit was used to prevent the first physiological fruit drop twice, and the residual flowers on the ear could be shaken gently under artificial conditions. At this time, it is necessary to prevent stink bugs nymphs from harming young fruits. One of the best periods for the control of stink bugs is the 1st and 2nd instar insects, and it is very difficult to control them from the 3rd instar. The control effect can be achieved by the application of Anzhi + Lesben and high-efficiency dipterex + trichlorfon, and the cost is also very low, focusing on fruit spraying. At the same time, the prevention and treatment of anthracnose and downy Phytophthora can be prevented with 80% Yunsheng and treated with Anke.