Base fertilizer has a good effect on the jujube's spring sprouting, stalking, and fruit setting. Ma Zhifeng, professor of Yangling Vocational and Technical College and expert on mixed fruit, points out that jujube basal fertiliser is generally harvested from the jujube fruit before the budding of the next spring. Time, the best in autumn. Because of the high temperature in autumn, the fertilizer is easily decomposed, which is conducive to the absorption of jujube trees and is also conducive to the healing of root wounds caused by fertilization. In addition, it can also enhance the ability of the tree to resist cold and help the jujube trees safely pass winter. Ma Zhifeng stated that the following points must be mastered when fertilizing: Select fertilizers and fertilizers are generally dominated by organic fertilizers, such as manure, soil miscellaneous fertilizers, cake fertilizers, grass ash, etc., together with available nitrogen fertilizer and phosphorus, potash fertilizer, in order to help tree vigor. The application amount of organic fertilizer should account for more than 90% of the amount of fertilizer, and it must be decomposed before application. Fertilizer dosage Fertilizer application amount should be determined according to the jujube tree size, nutritional status, and the number of fruiting. The general strain application amount is 35 kg to 50 kg of organic fertilizer, 1 kg to 1.5 kg of superphosphate, and 0.4 kg to 0.5 kg of urea. Fertilization methods should be based on different ages, planting density, soil type, and fertilizer. Ring groove application. Dig a circular groove around the perimeter of the canopy, with a depth and width of 30-50 cm. Mix the fertilizer with 3 times the soil and fill it in the trench then fill it with subsoil. The fertilization method is suitable for jujube saplings, the fertilization ditch moves outwards year by year, and the roots are induced to expand outward. Radial channel. Apply 4 to 6 furrows out of the main 30 to 50 cm of the jujube tree trunk. The ditch should be about 0.5 meters away from the canopy. The depth and width of the ditch should be 30 to 50 centimeters. Far trunk deep into the ditch. Mix the topsoil with the base fertilizer and mix it in. Then use the subsoil to fill in the grooves. This method of fertilizer application has less root damage, and has a larger contact area between roots and fertilizers. It is suitable for mature trees. Strip groove application. In other words, a jujube tree is dug along the outside of the side of the canopy, and a short ditch can be dug around the canopy of the jujube tree. Ditch depth and width are 30 to 50 cm. Slots should be rotated on both sides of the crown. This method saves labor and fertilizer, and it is suitable for use in plain date gardens and can be used in hilly and dated gardens. The garden and the tree plate are applied. Spread the basal fertilizer evenly under the canopy or under the canopy of the trees, then deep-dip 20-30 cm and turn the fertilizer into the soil. Several fertilization methods can be used interchangeably. When digging a fertilizing ditch, pay attention to less damage to the root system, especially roots larger than 0.5 cm in diameter should be carefully protected to avoid cutting off. According to the experiment, deeper application than the shallow application of the jujube tree is not effective. After water-retaining fertilizer is applied, water should be poured 1 to 2 times. In this way, sufficient moisture can be ensured, which can not only make the fertilizer rot quickly, ferment and decompose, but also make the jujube tree not dry during the fall season. After watering, cover crops with crop straw, thatch and other materials. Blowing Mouth,Disposable Blowing Mouth,Filter Spirometer Mouthpiece,Disposable Spirometer Mouthpiece Hengshui Qifei Paper Products Co. LTD , https://www.hengshuiqifei.com