Virus-free planting techniques of fruit trees

Use Chinongsu 1 bag (10 grams) 72% agricultural streptomycin 1 bag (15 grams) copper sulfate 15 grams, mix the three, add two pairs of vinegar to foam and dissolve, then spray or irrigate the roots with 30 jin of water. (referred to as agricultural streptomycin copper sulfate mixture). Adding 20 grams of zinc sulfate (zinc fertilizer) and 20 grams of boric acid (boron fertilizer) (40 grams of root irrigation) is better. Among them, peach, plum, apricot (plum) and cherry use 15 grams of copper sulfate before spreading leaves, and do not use copper sulfate after spreading leaves. Peach, plum, apricot (plum) and cherry use 20 grams of boric acid before and 10 grams after spreading leaves.

1. Spray: 1. Spray 1-2 times from flower bud germination to Xie florescence. The effect of pest control is good, do not add insecticides in full bloom, so as not to kill media bees and affect pollination and fertilization. The number of flowers is small and weak. Adding 0.5-1g gibberellic acid in the mixture can enhance flowering, pollination and fertilization. Pay attention to vegetables, flowers and fruits. 2. In the period of small, medium and large fruit, chelate zinc and calcium were made by using 1 bag (10 grams), 40 grams of zinc sulfate, 50 grams of lime, 2 taels of vinegar, stirring and adding 2-3 jin of water. The thick paste was added to the third agricultural streptomycin copper sulfate mixture, and the small fruit, medium fruit and large fruit were sprayed once respectively to supplement calcium, significantly control fruit cracking, fruit brown rot and rotten fruit, strengthen the control of various diseases and insect pests, and the fruit is shiny. 3. After the leaf development of peach, plum, apricot, plum and cherry, copper sulfate was not used in the mixture, 10 grams of boric acid (boron fertilizer) was used, 2-3 jin of chelated zinc and calcium was added, and sprayed once in small, medium and large fruit stages.

Second, root irrigation: add 50 grams of ferrous sulfate to the mixture of agricultural streptomycin sulfate, and irrigate the root once from flower bud germination to Xiehua stage and middle and large fruit stage respectively, among them, in the fruiting period of medium and large, because the fruit is too much, too big and too heavy, it is necessary to irrigate the root once to prevent fruit drop and replenish nutrition. Control all kinds of fruit tree yellowing disease, significantly increase chlorophyll, including citrus control Huanglong disease, mainly root irrigation. The yellow leaves change to light green in 7 days and from yellow to dark green in 25 days.

Third, it can prevent and cure viruses and viral venereal diseases (stubble, premature senility, dwarfism, mosaic, leaf shrinkage, yellow leaves, broken leaves, lobules, split fruit, fruit shrinkage, Huanglong disease, jujube disease, flower face, rust fruit, persimmon madness and acne stone disease, etc.), bacterial venereal diseases (root cancer, citrus canker, corner spot, etc.) Fungal diseases (root rot, stem rot, dry blight, ring rot, scab, anthracnose, scab, brown rot, gray mold, black spot, powdery mildew, downy mildew, rust, soot, banana Panama, etc.), comprehensive diseases (gum disease, apple mildew, etc.). Astonishingly improve fruit yield, quality and sugar content.

Fourth, control various insect pests: in the mixture of agricultural streptomycin copper sulfate, add 20% fenpropathrin (fenpropathrin) 1-2 sticks (4 ml each), 10% imidacloprid 1-2 bags (10 grams per bag), add water 30 jin 1-3 days spray 1-2 times. If the insect pest is serious, the dosage of insecticide will be doubled. Spraying for several months (half a year) can be insect-free.