Corn varieties are also divided into regions. Old farmers want to plant corn from Huang-Huai-Hai region in Jiangsu Province.

The old farmer asked whether the corn varieties in Huang-Huai-Hai area were suitable for planting in Jiangsu Province. Huang Huai Hai to promote the cultivation of corn varieties, planting in other places should be careful! In fact, the geographical location of the Huang-Huai-Hai region is similar to that of central Jiangsu, but it should not be concluded that the corn varieties in the Huang-Huai-Hai region can be planted in central Jiangsu, so there are many problems involved: first, they may not be able to produce high yields; second, they may not be able to buy seeds, even if they can buy seed varieties.

First of all, I would like to introduce the corn planting division of our country. From the above picture, we can see clearly that it is basically six major regions, among which the yield of spring corn in the north and Huang-Huai-Hai corn is the most prominent, which can also be said to be the granary of our country! Among them, the Huang-Huai-Hai Plain roughly refers to some areas that flow through the Yellow River, Huaihe River and Haihe River, mainly in Henan and Shandong, as well as Hebei, Jiangsu, Anhui, Shanxi, Shaanxi and other areas. From the map, we can also see that the Huang-Huai-Hai region contains the northern part of Jiangsu, while the central part of Jiangsu is not in this area. In other words, the maize varieties suitable for Huang-Huai-Hai region are not suitable for the central part of Jiangsu Province.

However, we also need to have a general understanding of China's seed review, which is divided into national review varieties and provincial approval varieties, and its promotion area will naturally be much larger for its Chinese trial varieties. When we buy corn seeds, careful observation of the packaging bag will find that, for example, it may be marked as suitable for planting in Henan, Shandong and northern Jiangsu.

However, some seeds are approved at the provincial level, and the label of the seed bag will become, planted in Henan, so that such varieties cannot be planted in other areas.

The reason for these regulations is to avoid unnecessary losses in agricultural production. Epidemic diseases are different in different regions, and the geographical climate is also different. After planting in different areas, it may not be suitable, and the yield may not be higher than that of the local varieties.

Therefore, when planting, we still need to see clearly the areas suitable for promotion and planting on the seed bags, and try not to plant corn varieties in the Huang-Huai-Hai area if central Jiangsu is not within the scope. For example, Jundan 20 is not only suitable for planting in Huang-Huai-Hai region, but also can be planted throughout Jiangsu, but Liyu 16 is not recommended to be planted in Jiangsu because of its weak resistance to some southern diseases.

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