Soybean high-yield soil conditions
1. Soil conditions are the basis for high yield of soybeans. Soil moisture status, nutrient status and some physical properties of soil are important factors affecting soybean yield.
2. Soybean seed germination requires more water than cereal crops. Soybean roots are softer and have a higher water content, and suitable soil moisture conditions can promote the elongation of the young roots in the depth. The main root of the plant can reach about 1 meter, and the lateral root can be expanded in parallel to about 0.5 meter. 3. When soil moisture is insufficient, it will affect its longitudinal and lateral growth.
4. Soybean roots are sensitive to changes in oxygen in the soil. Under hypoxic conditions, root growth was significantly reduced. Therefore, the soil moisture content is moderate, the plough layer is deep, and the tightness is moderate, which can provide good water content and aeration conditions, which will promote the growth and development of the root system.
5. In soil science, the soil compaction is used as the physical property index of water and aeration of soil tillage layer, which is generally expressed by the bulk density (grams of dry soil per cubic centimeter). The suitable soil capacity of soybean is 1.0 to 1.4. Loam is most suitable for soybean growth, and clay loam, clay loam and sandy loam can grow normally. Sand and clay have weak water holding capacity or poor ventilation, which is not conducive to growth.
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