First, one-sided thinking that as long as it is grafted seedlings. It is not possible to distinguish between early walnuts and late walnuts, and different cultivation modes and management measures cannot be adopted according to the different ecological characteristics of the varieties. It is often the case that different single plants in the same garden show great differences, which in turn affects the yield and benefit per unit area. Second, one-sided thinking that the sooner the better the results, the thinner the better. As people's impressions, first, the walnuts result in a long period, there are folk saying: "Peach three Li four apricots, eat walnuts for fifteen years." The second is that it is difficult for walnuts to take kernels. Some walnuts are harder than stones, and it is not easy to open them with a hammer. After knocking, there is only a little bit of nuts inside. Therefore, when choosing a walnut variety, fruit growers think that the earlier the better, the thinner the seed coat. In fact, this is also a kind of one-sided understanding. Third, regardless of species, choose seedlings random. Seedlings are the basis and prerequisite for production. Because walnuts have the characteristics of long production cycle, the quality of seedlings affects production and quality in years or even more than ten years. The control of seedling quality is the entry point to increase production and quality. Some fruit growers directly cultivate seedlings in order to reduce investment, and then change them. As everyone knows, some may not be able to completely change their success after 3 years. As a result, the variety in the park was disorderly and the sizes were uneven, which seriously affected the output in the later period. In addition, some fruit farmers have chosen to invest in the so-called “grafting†seedlings that have been purchased at very low prices without investigation. The result is also deceived. Incubator is a device used to grow and maintain microbiological cultures or cell cultures. The incubator maintains optimal temperature, humidity and other conditions such as the CO (CO2) and oxygen content of the atmosphere inside. Incubators are essential for a lot of experimental work in cell biology, microbiology and molecular biology and are used to culture both bacterial as well as eukaryotic cells. Lab Incubator,Lab Heating Incubator,Lab Thermostat Incubator,Lab Climate Incubator Unimedsume Trading Co., Ltd , https://www.ums-labmed.com