Citrus acid sugar fertilizer should pay attention to what

衢州崭 嵌 嵌 嵌 嵌 嵌 嵌 嵌 嵌 嵌 嵌 嵌 嵌 槐壬疤 槐壬疤 岫 哂谏疤 哂谏疤 哂谏疤 哂谏疤 嵛 嵛 嵛 嵛 嵛 嵛 嵛 嵛 嵛 鼻 鼻 鼻 鼻 鼻 鼻 鼻 鼻 鼻 鼻 鼻 鼻 鼻 鼻 鼻 鼻 鼻 鼻 鼻 鼻 鼻 鼻 鼻 鼻 鼻 鼻 鼻 鼻 鼻 鼻 鼻 鼻 鼻┖ 柿 柿 柿 柿 D D D D D ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一 一. Compound fertilizer can not only meet the nitrogen, phosphorus and potassium needed for citrus growth in time, but also can make up for trace elements such as magnesium and zinc. It can also improve the soil acidity and soil bulk density, increase the fertilizer utilization rate, and prevent or correct citrus. The lack of symptoms of oranges improves the soil fertility of citrus orchards and thus increases the sugar content of citrus. Second, increase calcium fertilizer. According to studies, the acidity of oranges is related to the amount of calcium in the soil. The calcium content is high, and the acidity of citrus is relatively low, and vice versa. The orange soil of our city is mostly red soil, and the soil is acidic. Generally, the pH value is between 5.0-6.0, and calcium deficiency is common in the soil. For this reason, it is recommended that calcium fertilizer, such as quicklime, be added in the spring, which can effectively increase the calcium content in the soil, and at the same time, can supplement the calcium source needed for citrus growth. In spring each year, 50-60 kilograms of fresh lime are used in the orchard soil to reduce the acidity of the orange orchard soil. Third, change the blind fertilization for soil testing and fertilization, due to different nutrient requirements for different growth stages of oranges, different levels of soil fertility in different orange orchards, through the determination of soil nutrients, symptomatic fertilization, due to lack of supplements, can effectively improve the citrus Orange quality and output, and can reduce the cost of fertilizer, to achieve cost-effectiveness.

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