Potted Fruit Tree Fertilizer "Three Don't"

Potted Fruit Tree Fertilizer "Three Don't"

Potted fruit trees, such as the use of dwarfing rootstocks, or spur-type varieties of potted apples, pears, grapes, peaches, apricots, pomegranates, figs, etc., both high ornamental value, have some economic value. Some bonsai enthusiasts due to the lack of knowledge of fertilization, in management often counterproductive. The author combined with practical experience, it is recommended that potted fruit trees fertilization should be done "three do not." Do Shi concentrated fertilizer. Small potted fruit trees nutrition area, if fertilizer concentration is too large, or too much fertilizer once, can cause reverse osmosis, resulting in shrinking the leaves of fruit trees, fruit trees and plants died. When fertilizing, it is generally necessary to master the principle of “using thin fertilizers, small quantities each time, multiple applications”, mainly pouring thin fertilizer liquids, applying urea in the roots, potassium dihydrogen phosphate, special compound fertilizers for fruit trees, etc. For young fruit trees below 5 years old, each application rate is 0.05-0.25 kg; for fruit trees over 5 years old, 0.5-1 kg of fertilizer is applied each time. Foliar spraying urea, potassium dihydrogen phosphate concentration of 0.3%-0.5%, superphosphate concentration of leaching solution of 2%-3%, concentration of ash leaching solution of 2%-5%, boric acid or borax concentration of 0.2% - 0.3%, the concentration of ferrous sulfate is 0.2% - 0.5%, and the concentration of zinc sulfate is 0.3% - 0.5%. Do not apply raw fertilizer. The use of unfermented fertilizers is not only easy for maggots, worms, odors, indoor air pollution, but also high temperatures in pots that can harm the root system. Therefore, soybean cakes, hooves or chicken, duck, fish and other inedible viscera as well as chicken duck droppings, rabbit droppings, etc. should be soaked in water in advance in the tank, fully fermented under sunlight, and then used after decomposed. Don't apply perianal neck fat. The most active part of the roots of fruit trees that absorbs fertilizer is the fast-growing root zone and the new hair root. Fertilization around the neck is not conducive to fertilizer absorption, but also easy to burn out the roots of fruit trees, so that the leaves gradually become yellow off, affecting normal growth. The correct method is to embed organic fertilizer or urea, potassium dihydrogen phosphate and other chemical fertilizers in the soil beside the flowerpot, or apply it far from the root neck, cover it with a layer of soil, and then pour it. water.