Litchi flower protection fruit pesticide best formula, what medicine to use

During the young fruit mixing stage 10-15 days after the female flower was in full bloom, combined with the prevention and control of diseases and insect pests, 0.3kg urea and 0.2kg potassium dihydrogen phosphate were mixed in every 100kg water and sprayed on the young fruit, and during the embryo abortion period on May 20-25, urea 0.4kg per 100kg water and Baoguoling 25-30ml were sprayed on the fruit.

1. Pesticide formula for flower and fruit protection of litchi

1. You can keep 0.5-2 boxes of bees per mu during the flowering period of litchi, and collect or shake down the blooming male flowers of litchi on a sunny day from 9 to 11:00, then put them into clean water and gently scrub them and filter them. Add 0.2kg urea, 0.1kg borax and 0.1kg potassium dihydrogen phosphate to each 100kg pollen water, stir well and spray them on the spikes of female litchi flowers in full bloom.

2. It can also be sprayed on the young fruit 10-15 days after the female flower is in full bloom, combined with the prevention and control of diseases and insect pests, mixed with 0.3kg urea and 0.2kg potassium dihydrogen phosphate per 100kg water, and sprayed on the young fruit during the embryo abortion period of May 20-25. Urea 0.4kg and 25-30ml were added per 100kg water and sprayed on the fruit.

2. Suitable growth environment of litchi.

Litchi trees like high temperature, high humidity and sunny growth environment. Litchi heredity requires relatively low temperature during flower bud differentiation, but the lower temperature is easy to suffer frost injury when the lower temperature is from-2 to-4 ℃. During flowering, the weather is sunny and warm, but not dry and hot, if the humidity is too low, continuous rain, dry and hot weather or strong north wind are disadvantageous to flowering and pollination. At the same time, adverse disaster weather encountered during flowering and fruit stage will also lead to flower and fruit drop.

Third, how to bag litchi

1. Generally conditional orchards can carry out ear bagging when the litchi fruit is about 5% ripe, that is, when the base of the fruit begins to turn red, which can prevent not only insects and diseases, but also bats, moisturizing and cooling, and sunburn fruits; help to reduce evaporation, increase the temperature in the bag, and promote early ripening of the fruit.

2, you can use autocratic fruit bags, or transparent plastic film bags, or translucent sulfuric acid paper bags, bag garden tube-shaped, length for 30-40cm, width for 20-25cm, length and width according to the ear length, size, above some small holes for 0.5cm diameter, put on the ear, the upper bundle tied, the lower part slightly opened, before bagging, you need to spray insect and disease prevention pesticides, when picking the fruit, the ear and the fruit bag can be picked together.

IV. Nutritional value of Litchi

1. Litchi is rich in nutrition, including sucrose, glucose, protein, fat, vitamin A, B, C, etc., as well as folic acid, arginine, tryptophan and other nutrients, which is beneficial to human health. Litchi has the effect of invigorating the spleen and relieving pain, which is suitable for people with insufficient body fluid, weakness, stomach cold pain, hernia pain and so on.

2. According to modern research, litchi can nourish brain cells, improve symptoms such as forgetfulness, insomnia and dreaminess, promote skin metabolism and delay aging.