In the autumn harvest season, some farmers want to use the harvested seeds to plant seeds. But do you know that some seeds can be left and some seeds are not acceptable?
The first is that seeds of hybrid crops cannot be preserved. For example, hybrids such as rice, cotton, Chinese cabbage, onions, tomatoes, eggplants, peppers, carrots, cucumbers, and watermelons have the combined advantages of both parents. These can be preserved. Since the second generation of hybrids, segregation will occur, yield and resistance will be reduced and they will not be able to continue to be used.
Second, crops sprayed with ethephon cannot be preserved. The use of ethephon ripened crops shortens the natural growth period, resulting in incomplete embryo development and severely affecting the seed germination rate.
The third is that seeds that have been sun-dried on concrete ground cannot be preserved. Because of the seeds sunning on the concrete floor, especially the cotton seeds or rice seeds with high water content, due to the high surface temperature, the seed respiration is strong, and some of the seeds will become “dummy†(ie, the embryos are killed by heat), completely losing their ability to germinate. .
The fourth is that greenhouses cannot be preserved. Planting vegetables in greenhouses is equivalent to building a greenhouse for vegetables. Therefore, the resistance and disease resistance of vegetables will be reduced, and the pollination rate will be greatly reduced. Together with the same land, the same crop has been planted, increasing the incidence of vegetables. After planting, the seeds and the pathogenic bacteria in the soil can cause great harm. In addition, we must also pay attention to the point that seeds cannot be placed together with pesticides and fertilizers because pesticides and chemical fertilizers will volatilize harmful gases, seriously destroy the normal physiological functions of seeds, and greatly reduce the germination ability of seeds and affect the emergence rate.
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