2. Any leaf that is dark green, has no pests and diseases, and has no macula can not be destroyed, because these leaves can still contribute to the yield of tomatoes.
3. The leaves of the lower part of the bottom of the ear are yellowed, and the old leaves with serious yellow spots or pests can be destroyed.
4. The leaves of the middle and lower part of the plant that are severely yellowing due to serious pests or other physiological diseases can be destroyed.
5. The leaves at the bottom of the bottom of the ear can be knocked off.
6. When hitting the leaves, it is advisable to take 2 pieces each time, not too much.
7. The interval between two leafings should be more than 10 days.
8. Each time you should hit the leaves at about 12 noon on a sunny day, you should not use the leaves when the morning dew is very large, so as to avoid the wound infection. It is also not possible to hit the leaves in the evening to prevent the wound from healing and to get sick when the humidity is high at night.
9. After the leaf is applied, the natural alizarin-shuofeng 481 should be sprayed once to promote the photosynthesis of the leaves and avoid affecting the growth and development of the plants.
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