(1) Put a bee pollination. Longan is the insect and medium flower of the male and female flowers, mainly based on insect pollination. Bees have the most activity in the radius of 250 meters, so the bee colony is best dispersed in the orchard. Each group of 0.46-0.53 square kilometers longan is equipped with a group of bees (8-10 basket bees). In the large longan base, a group of bee colonies are set every 500 meters with a group of 50 bees. The bee colony that pollinates the fruit trees should be a strong bee colony with a new queen bee, and strengthen the feeding management to promote the proliferation of the bee colony and increase the enthusiasm of the bees. The bee colony should be transported to the orchard two or three days before the longan blossoms. During the bee-keeping period, the orchard, nearby orchards, vegetable gardens, and crops should be suspended from spraying insecticides. (2) Artificial pollination. During the blooming period of the male flower, the pollen is adhered by repeatedly rubbing the anther with a clean wet towel, and then quickly washed into the water. When the amount of the pollen is large, the female spray is immediately sprayed with a clean sprayer. The time when the pollen is immersed in water should not exceed 20 minutes. If it exceeds 30 minutes, the pollen will germinate and become ineffective. When the whole flowering flower is immersed in water to wash the pollen, many people should pick flowers at the same time, and quickly wash out the pollen in 1-2 minutes, and then spray it through the nylon mesh and spray it quickly. In case of lack of pollination conditions in cloudy and rainy days, pollen should be collected in a low-humidity dry container in advance, and the diluted water should be sprayed quickly after the weather improves. (3) Thinning the fruit. The time of fruit thinning should be from mid-June to early July. Early-maturing varieties are early, late-maturing varieties are late, and more than 1/4 of the last-level new shoots have no fruit, so do not strip the ears, too many ears (80% - 100% of the prosperous results of the mother branches are fruit-bearing ) To remove 10% - 30% of the ear, leaving 60% - 70% of the strong results of the mother branch. Excessive ears, ears at the top of the canopy, ears with too few fruit sets, and ears affected by pests and diseases are cut off, leaving the ears covered by branches and leaves in the middle and lower parts of the canopy. (4) Fruiting and bagging. The bagging of the ear helps to prevent damage to the fruit by the cockroaches, yellow (black) bees, bats, etc., so that the skin of the fruit is smooth and yellow, the cracking fruit is reduced, and the quality of the product is improved. The test proves that the long ear of the plastic mesh bag can not only be ventilated, but also has a certain degree of opacity, which can reduce the temperature of the noon fruit surface by 0.2-1.5 ° C, reduce the occurrence of sunburn of young fruit, and play the role of insect prevention and bat prevention. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone Work Safety Shoes,Construction Safety Shoes,Industrial Safety Shoes Ningbo Staneex Imp. & Exp. Co., Ltd. , https://www.staneex.com