Promotion of greenhouse nectarine coloring four strokes
1. Control the temperature and humidity: The fruit enters the coloring period and requires daytime temperature of 25°C~28°C, no more than 30°C, nighttime temperature of 15°C, no less than 12°C, air humidity should be controlled below 60% to facilitate coloring. 2. Potassium fertilizer application: After the fruit of nectarine enters the coloring stage, the demand for potash fertilizer is higher. Applying potash fertilizer at a proper time can significantly increase the yield and increase the fruit sweetness. In addition to spraying 0.5% potassium dihydrogen phosphate solution on the leaves, potassium sulfate or potassium-containing compound fertilizers and plant ash may be used. Generally, 0.25 kg of potassium sulfate is applied per plant, or 0.5 kg of compound fertilizer is applied, or 2-4 kg of plant ash are applied, and appropriate amount of water is applied after fertilization. 3. Increase the light: In order to achieve the goal of coloring the greenhouse nectar, it is necessary to take measures to increase the light intensity in the greenhouse and improve the lighting conditions of the tree. Generally, it is possible to use a reflective curtain on the wall, a reflective film under the tree, and a method of cleaning the facade. In the premise that the indoor temperature is not lower than the required temperature of the peach tree, as soon as possible to demolition of the curtain, cover the curtain in the evening, in order to promote fruit surface color. 4. Thinning, hanging branches, and picking leaves: When sparsing, the strong new shoots on the upper part of the canopy and the periphery are first sparsely removed, followed by the sparse shoots of the inner part of the canopy, which causes the lower part of the canopy to produce spots. Hanging branches should be changed from red to red in the Yang surface fruit, that is, 10 to 15 days before harvesting. Hang the drooping fruit branches with a string, and remove the shading leaves on the top of the fruit so that the sun shines directly on the fruit. To prevent the premature removal of leaves, so as not to affect fruit development, increase cracking fruit. Tea Cup Holder,Diatomite Products,Soap Dish Diatomite,Soap Diatomaceos Earth Dongguan Vanilla Bioengineering Co., Ltd. , https://www.healthecigarette.de