| 摘要 |
A foliar spraying agent to be applied upon leaves by diluting with water by 500 to 1000 times which is capable of increasing yield and improving quality of plant is provided. It is produced by grinding vegetable humus containing 50 to 80% by weight of water, contacting the resulting ground vegetable humus with air sufficiently to activate the ground product and extracting the activated product with water.
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