The seeds of green onions, onions, and leeks appear at first sight. The epidermis is black and the shapes are similar. It is not easy to distinguish between them. However, after careful observation, there are still differences among the three.
Onion seeds are shield-like, angular, slightly flat, with few and neat skin wrinkles, and a shallow umbilicus. The seeds of the onion were shield-like and the skin was slightly irregular and wrinkled. The umbilicus was very deep. The leek seeds are shield-like, and the skin wrinkles are numerous and fine, and the umbilicus has no obvious concavity. In general, the weight of 1000-grain seed of scallion seedlings is 2.9 g, the seed weight of onion seed is 4.6 g, and the seed weight of amaranth is 4.15 g. It is felt by hand to pick it up. The green onion seed is lighter and the onion seed is heavier.
The seed coats of these three vegetable seeds are poor in water permeability, water swelling is slow, soaking is required before sowing, and the lifespan of these three kinds of vegetable seeds is short, do not use Chen seeds when planting.
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