Fertilizer spraying technique of planting cherry

(1) spraying time: foliar fertilizer can be sprayed after cherry trees sprout to mature or even before defoliation.

(2) Fertilizer spraying varieties: all kinds of nutrient elements needed by crops can be used as fertilizer spraying varieties.

(3) Fertilizer spraying: it is to supplement fertilizer to cherry trees by foliar spraying.

(4) brief introduction of specific fertilizer spraying technology and varieties:

A. Fertilizer spraying from germination to flowering: mainly spraying fertilizers to promote flower bud differentiation and pollination, boric acid aqueous solution and agents to prevent flower rot, freezing injury, heat injury, virus disease and so on. Commonly used foliar fertilizer:

The formula is 1:50 grams of boric acid, 50 grams of zinc sulfate, 20 grams of antifreeze or 2116300 times of Tianda, 0.2jin of brown sugar and 15kg of water (one sprayer) to spray the whole tree; the aim is to supplement boron and zinc for cherry trees. Boron can promote flower bud opening, promote pollination, increase seed content in fruit, prevent crooked and abnormal fruit; zinc can prevent the occurrence of all kinds of virus diseases. Anti-freezing is to prevent frost damage and prevent flower buds from being frozen.

Formula 2: 20 grams of virus DNA, 20 grams of organosilicon calcitonin, 50 grams of brown sugar, 15 kilograms of water, fully mixed evenly, spraying the whole tree, the main purpose is to prevent flower rot and virus disease, prevent low temperature chilling injury and freezing injury, promote flower bud opening and promote pollination.

B, flowering period: it is generally not suitable to spray fertilizers and chemicals. If you encounter a cold snap, you can spray antifreeze and brown sugar aqueous solution in the afternoon to prevent frost injury. The concentration of spraying brown sugar is: 15kg water, add 100g brown sugar and 40g antifreeze or 2116 times the day, fully dissolve and spray the whole tree evenly. If the temperature is below 4 degrees that day, 50 grams of milk powder can be added to the solution, but it must be fully dissolved.

The best pollination temperature for cherry trees during flowering is 18-22OC. When the temperature exceeds 23OC, the petals will be damaged, pollen will lose activity, or even die, seriously affect pollination fruiting, cause a large number of abnormal fruits, affect yield and quality, and reduce yield and income. The way to prevent it is to encounter a high temperature above 23OC at 3: 00 p.m. on the same day. It is necessary to immediately spray the cherry trees with edible vinegar solution for detoxification. The method is: 100 grams of edible vinegar, 40 grams of rotten Sukang or 20 grams of organosilicon calcitonin, 15 kilograms of water, stirring evenly, spraying the whole tree, which can prevent and relieve the drying of flowers caused by heat damage, the death of pollen, the abnormal fruiting of pollinated fruits and the burning of leaves.

C, fruit rapid expansion period: the cherry tree fruit rapid expansion period begins from 7 days to 15 days after flowering. This period is the most exuberant period for cherry fruit vegetative growth and reproductive growth. Leaves, branches, fruits, seeds, roots and tree trunks grow synchronously and rapidly, and it is also the best time for cherry trees to absorb nutrients from the soil. Root nutrients are continuously transported to the fruit and plant body. During this period, the climate is not very stable, and the growth of branches, leaves and fruits is easily affected by the climate. Any high or low temperature will adversely affect the growth of fruit and the whole tree, but it is also the best time for leaves to spray fertilizer. In order to prevent any adverse factors that may occur to the growth of cherry trees, foliar fertilizer should be sprayed in time.

Formula 1RV 800Mel 1000 times day up to 2116, evenly spraying leaves and fruit, can promote fruit rapid expansion, prevent sudden low temperature and high temperature

Formula 2: virus DNA second generation 20g, organosilicon calcitonin 20g, puffed fruit king 20g, add water 15kg, spray leaf and fruit evenly, the main function is to prevent virus disease and fruit rot.

Formula 3: 500 grams of lime powder, 15 kilograms of water, soaking for 4 hours, taking the supernatant, adding 10 grams of monosodium glutamate to the supernatant, stirring well, pouring into the sprayer, replenishing water, spraying the whole tree evenly, can play the role of protecting leaves.