Extra-root topdressing is also called foliar spraying, that is, the chemical fertilizer is formulated to an appropriate concentration and sprayed on the leaves and branches with a sprayer. It is directly absorbed and used through the lenticels, stomata, and cortex, eliminating the need to absorb through the roots and then transport and distribute. the process of.
Save labor and fertilizer. Quick urea can be absorbed within a few hours after spraying, and 80% can be absorbed within 24 hours. The leaves will turn green after 2 to 3 days. In production, the effect of spraying "bright leaf fertilizer" in May after falling flowers is very good.
Overcoming nutrient competition Spraying fertilizer can overcome the nutrient competition of the center distribution caused by each growth peak. The leaves of medium and short branches can be directly absorbed and utilized to form more flower buds, especially for young and vigorous trees and long-year trees. Nutrient accumulation, flower promotion and yield increase are more obvious. In pear orchards lacking trace elements, the effect of spraying fertilizer is the most appropriate.
Improve fertilizer utilization. Spraying fertilizer can prevent losses due to soil application of chemical fertilizers being fixed and lost by the soil, or interference from soil physical and chemical properties, and can greatly improve fertilizer utilization.
Increasing local nutrient accumulation and spraying fertilizer combined with summer flower promotion measures such as branch pulling and girdling can increase the local nutrient accumulation of the treated branches, and the flower and yield increase is more obvious. The effect of spraying fertilizer is most obvious in pear orchards lacking trace elements.
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Save labor and fertilizer. Quick urea can be absorbed within a few hours after spraying, and 80% can be absorbed within 24 hours. The leaves will turn green after 2 to 3 days. In production, the effect of spraying "bright leaf fertilizer" in May after falling flowers is very good.
Overcoming nutrient competition Spraying fertilizer can overcome the nutrient competition of the center distribution caused by each growth peak. The leaves of medium and short branches can be directly absorbed and utilized to form more flower buds, especially for young and vigorous trees and long-year trees. Nutrient accumulation, flower promotion and yield increase are more obvious. In pear orchards lacking trace elements, the effect of spraying fertilizer is the most appropriate.
Improve fertilizer utilization. Spraying fertilizer can prevent losses due to soil application of chemical fertilizers being fixed and lost by the soil, or interference from soil physical and chemical properties, and can greatly improve fertilizer utilization.
Increasing local nutrient accumulation and spraying fertilizer combined with summer flower promotion measures such as branch pulling and girdling can increase the local nutrient accumulation of the treated branches, and the flower and yield increase is more obvious. The effect of spraying fertilizer is most obvious in pear orchards lacking trace elements.
Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of a third party are involved, please inform this website for processing. phone
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