Vegetable spraying micro-fertilizer matters needing attention
2022-10-01 09:05:53
1, concentration
It is good to receive good results when the concentration is suitable. The high concentration is not only unhelpful but harmful. Usually boric acid or borax 0.05%-0.25%, ammonium molybdate 0.02%-0.05%, copper sulfate 0.01%-0.02%. If high concentration is required, it should not exceed 20% of the specified concentration.
2, period
In order to reduce the loss of micro-fertilizer during the spraying process, it is best to choose spraying on cloudy days, and on sunny days, it should be sprayed in the afternoon to evening to maximize the wet time of the fertilizer on the stems and leaves for absorption.
3, the amount
The amount of trace elements required for vegetables is small, and the critical range of various trace elements from lack to excess is very narrow, and a slight lack or excess may cause harm. Generally, 40-75 kilograms of fertilized liquid per mu can make the stems and leaves of vegetables evenly wet, avoiding repeated application.
4, the number of times depending on the growth and development of vegetables, usually 2-4 times.
5, mixed spray
Reasonable mixing and spraying between micro-fertilizers, or mixed with other fertilizers or pesticides, can play the role of “one spray and multiple effectsâ€, but it is necessary to clarify the physical and chemical properties of fertilizers and pesticides, prevent chemical reactions and reduce fertilizers. )effect.
Source: New Rural Business Network - Caitian Science and Technology Information Center, Guangdong Academy of Agricultural Sciences
It is good to receive good results when the concentration is suitable. The high concentration is not only unhelpful but harmful. Usually boric acid or borax 0.05%-0.25%, ammonium molybdate 0.02%-0.05%, copper sulfate 0.01%-0.02%. If high concentration is required, it should not exceed 20% of the specified concentration.
2, period
In order to reduce the loss of micro-fertilizer during the spraying process, it is best to choose spraying on cloudy days, and on sunny days, it should be sprayed in the afternoon to evening to maximize the wet time of the fertilizer on the stems and leaves for absorption.
3, the amount
The amount of trace elements required for vegetables is small, and the critical range of various trace elements from lack to excess is very narrow, and a slight lack or excess may cause harm. Generally, 40-75 kilograms of fertilized liquid per mu can make the stems and leaves of vegetables evenly wet, avoiding repeated application.
4, the number of times depending on the growth and development of vegetables, usually 2-4 times.
5, mixed spray
Reasonable mixing and spraying between micro-fertilizers, or mixed with other fertilizers or pesticides, can play the role of “one spray and multiple effectsâ€, but it is necessary to clarify the physical and chemical properties of fertilizers and pesticides, prevent chemical reactions and reduce fertilizers. )effect.
Source: New Rural Business Network - Caitian Science and Technology Information Center, Guangdong Academy of Agricultural Sciences
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