Although the demand for micro-fertilizer is not large, if there is a lack of micro-fertilizer, it may cause no small loss, so there is no size, and micro-fertilizer must be applied at the right time. Citrus is in the harvest season, and if it lacks micro-fertilizer during growth, it may cause the citrus leaves to turn yellow. Biological pesticides http://
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According to the expert's experimental investigation, many orchards lack boron, magnesium and some areas of zinc, molybdenum, calcium and other micro-fertilizers. This disorder of medium and trace elements is a factor that causes problems such as weaker trees, yellow leaves and decreased fruit. one. Therefore, in the management of fertilizers, it is very important to pay attention to balanced fertilization and strengthen the nutrition of medium and trace elements.
The application of trace elements in the foliage is mainly applied to the application of boron before flowering, calcium application during the fruiting period to the harvesting period, and the application of nutrient solution and Hefeng molybdenum.
Calcium: Before the fruit is collected until the harvest, the leaves are sprayed with 1000 times of calcium and vegetable fertilizers 2-3 times, about 10 days apart.
Boron: Spraying Hefeng Boron/Fenglihui Boron 1000-1500 times before and after flowering.
Magnesium: The whole growing period foliar spray will benefit 800-1200 times of nutrient solution, which can effectively solve the yellowing caused by magnesium deficiency.
Zinc: Spraying Hefeng Zinc (3000-5000 times) / Fenglihui Zinc 1000-1500 times before spraying.
Molybdenum: Spray the Hefeng molybdenum 1000-1500 times solution 2-3 times in the whole growth period, with an interval of about 10 days.