The effective storage period of cucumber seeds should not exceed 3 years at most. The seedling rate should be reduced by 30% to 40% in more than 3 years. Although some seeds can emerge after sowing, they often have no true leaves and cannot survive. Fresh cucumber seeds can be identified by the following methods: A look at the color. The skin of the new seeds was light white and shiny; after peeling off the skin, the nuts were white and the tips were fine hair tips. The seed's skin is yellowish and dark in color. The darker it is, the longer the storage time is. After the skin is peeled off, the nuts are black and there is a small black block on the top. Two smell smell. The new seeds have a rotten cucumber sour, Chen seeds are not, and a slight earthy smell. Tried to germinate. When the new seeds had just buds, the buds were tightly wrapped around the buds. After a week, the skin started to crack, and the seeds of Chen were cracked as soon as they appeared.
The effective storage period of Chinese cabbage seeds is within 2 years. The seeds harvested in that year can be directly sown and can still be planted in the second year. For seeds with a storage period of more than 2 years, the seedling emergence rate should be reduced by about 20% after sowing, and it is highly susceptible to disease. The longer the storage time, the lower the emergence rate and the worse the disease resistance. Moreover, storage cabbage seeds must be stored in a cool dry place, do not store in airtight containers such as water tanks, iron drums, etc., in order to avoid seed damage and affect the emergence rate. Shiny bright new seeds, dim for Chen seeds.
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