The management of jujube (Dongzao, Lizao, Tuntunzao, etc.) is mentioned, and two major problems are often faced in production: one is that it is hard to obtain fruit, and the other is that the tree is too mad. During the process of overcoming these problems, everyone did their best and worked hard, but those who did not like it were six or seven times a decade. They either took a lot of dates or they took more or less topples in the fields, or they took control of it. Wang leaves weak yellow leaves. In fact, careful people have found that fertilization is an effective way to solve the above problems. Because red dates are required to achieve high quality and high yields for successive years, the total input of fertilizers (including fertilization time, fertilizer selection, fertilization methods, etc.) accounts for about 60%, watering accounts for about 20%, and plastic pruning (including pulling branches, stripping, etc.) accounts for about 10%, pest control about 10%. If you put too much effort on pruning and pest control, it shows that there must have been a lot of mistakes in fertilization. Jujube has the habit of absorbing roots and having a strong apical dominance. It is not appropriate to apply more nitrogenous fertilizer. In production, it is precisely at this stage that care is not taken. Excessive application of nitrogenous fertilizer or high-nitrogen compound fertilizer can easily cause jujube arrogance and difficulty in fruit set-up, and it must be controlled by girdling or spraying regulators to boost fruit growth. This will not only result in wastage of investment by investment workers, but also accelerate aging of the tree in tossing. The most direct and effective approach is to start from the fertilization aspect, and apply less or no nitrogen fertilizer to fruit trees that are hard and strong, increase organic fertilizers and trace element fertilizers, and use “diet†regulation to achieve the purpose of controlling fruit setting. Take 10 years of winter jujube or pear jujube as an example: Applying 1~2 kg + 0.5 kg of potash to the shellfish or fungus tribe before the end of March will have better effect; the pre-flowering, young fruit period and the fruit expansion period will increase with each mu. It is advisable for the water to exert potency of 10-15 kilograms of potassium or 5-10 kilograms of eugenin.
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