Sunflower cultivation has a wide range of adaptability to the soil. Sunflowers can be cultivated in light sandy loam soils or heavy clays with a pH of 5-8.15 and a salt content of 0.3%-0.5%. However, to achieve high yields, a deep black soil layer and a relatively high fertility are required. High, flat, well-drained, sandy loam or black loam with a pH of 6-8 is best. If only planted on dry land, heavy clay, saline-alkali wetlands. In order to achieve high yields and stable yields, it is necessary to adjust conditions to local conditions and adopt improved measures such as improving water conservancy conditions, increasing organic fertilizers, preventing waterlogging, and draining alkali and so on. The choice of cornices is best for cereal crops to be forehead crops, to avoid heavy cropping and pod cropping; legume crops have severe sclerotinia and should not be selected. The plot should not be planted with long residual herbicide pesticides.
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