How to identify the deficiency of Chinese cabbage

1. Nitrogen-deficit early plants are dwarf, the leaves are small and thin, the leaves are yellow, and the stems are slender and grow slowly. In the middle and late period, the leaf ball is not full, the heart period is delayed, the leaf fiber is increased, and the quality is decreased.

2. Phosphorus deficiency does not thrive and the plants are short. The leaves are small and dark green. Fine stems, weak root development.

3. Potassium deficiency generally occurs in the late developmental stages, and it changes from the lower leaf margin to wilting, gradually to the inner or upper leaves, and the lower leaves wither.

4. Occurrence of calcium deficiency margin rot, the edge of the inner leaf was immersed in water, to brown necrosis, dry skin like tofu, the top of the internal burning, commonly known as "dry heartburn", also known as heart rot.

5. Boron-poor growth point atrophy and death, leaf shrinkage, distorted deformity. Leaves in the leaves of ribs brown cracked.

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