Guava is a typical tropical and subtropical evergreen fruit tree. It is warm and frost-resistant. When the temperature drops below 5 degrees Celsius in winter, it will be frozen. It shows that the leaves are chlorotic and red, and they fall off. The fruit tastes light and cannot be eaten. In severe cases, the branches are dry, the plants die, and the fruits rot and fall off. If you apply heavy winter warming fertilizer and rejuvenate the tree, you can significantly improve the wintering ability and cold resistance, and avoid freezing damage. The specific fertilization methods are as follows: At the end of October and the beginning of November, the application of winter warming fertilizer, mainly high-quality organic fertilizer and NPK fertilizer, and increased phosphorus and potassium fertilizer. The result tree of more than one year, each plant is fermented with 15-20 kg of human and poultry manure, NPK (15-15-15) potassium sulfate compound fertilizer 0.75~1 kg, superphosphate or calcium magnesium phosphate fertilizer 1.5~ 2 kg, potassium sulfate 0.25 ~ 0.50 kg. Around the canopy drip line, dig deep and wide annular grooves of 25-30 cm each, mix all the fertilizers thoroughly, spread them in the annular groove, cover the soil, cover the fertilizer, and then spray each tree. 40 to 50 kilograms of clean water or biogas slurry or manure decomposed manure and manure, uniformly applied to the soil covering the annular groove, and it is better to completely penetrate the soil into the soil to accelerate the dissolution and transformation of the fertilizer for the root system. Absorption and utilization to improve fertilization. In addition, every 7 to 10 days of foliar spraying 0.2% to 0.3% potassium dihydrogen phosphate, 500 to 600 times Amino Acid active liquid fertilizer mixture, or 800 to 1000 times Xingpeng phosphorus potassium No. 1, 600 to 800 times humus The acid active liquid fertilizer mixture is sprayed continuously for 2 to 3 times. Spraying all the branches and fruits inside and outside the canopy should be evenly sprayed, so that it is better to start dropping the drops of water, and to supplement various nutrients from the leaves. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone The production and quality of enzyme preparations produced by plants are unstable due to the influence of growth area, season, climate, etc. The enzymes produced by animals are mainly extracted from the glands of slaughtered livestock, and the source is limited; only enzymes produced by microorganisms can meet the needs of any scale, with high yield and stable quality. Microbial enzyme preparations can not only replace the main types of animal and plant enzyme preparations with the same performance, but also produce high-temperature-amylases that act as catalysts at 100°C and detergent proteases that act at pH 10-12. In the 1940s, the microbial enzyme preparation industry developed rapidly. At present, the production of enzyme preparations is mainly based on deep fermentation, supplemented by semi-solid fermentation, and the ability of the strains to produce enzymes has also been greatly improved. The immobilized enzyme and immobilized cell technology developed in the 1960s and 1970s enabled the enzyme to be used repeatedly and continuously reacted, and its scope of application was also expanded. At present, in addition to the food and textile industries, microbial enzyme preparations are also used in daily chemistry, chemicals, pharmaceuticals, feed, papermaking, building materials, biochemistry, clinical analysis and other aspects, becoming an important sector of the fermentation industry. enzyme preparation,food additives,Papain,lactase,lipase,lysozyme,bromelain,protease,laccase PYSON Co. ,Ltd. , https://www.pysonbio.com
Guava fertilization is at the time