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How to choose spring sowing corn
Soil selection is a crucial factor in crop cultivation and should be based on various environmental and agricultural conditions. In areas with high temperatures, it's recommended to choose late-maturing or medium-late maturing varieties, which have longer growth periods. For flat lands, medium-late maturing varieties are more suitable, while for alfalfa fields, early to mid-early maturing varieties are preferable. This helps ensure optimal growth and yield under different topographical conditions.
Soil fertility also plays a key role in variety selection. High-fertility soils are ideal for high-yield varieties that require rich nutrients, while poorer soils may benefit from more resilient or stress-tolerant varieties that can thrive with fewer resources.
Crop rotation history is another important consideration. If the previous crop was soybean, which tends to improve soil fertility, you can opt for high-yield crops. If corn was previously grown successfully, it’s safe to continue with the same species. However, if the previous crop suffered from disease, it's essential to avoid planting varieties that are susceptible to the same illness. Additionally, after three to four years of continuous planting of the same variety, soil depletion and genetic degradation may occur, so it's wise to introduce new varieties to maintain productivity and quality.
Farmers with experience in cultivating high-variability crops may prefer varieties that require more intensive management, while those who grow less diverse crops might find low-maintenance varieties more practical.
Disease resistance is also a major concern. Currently, maize rough dwarf disease is a significant issue, often linked to imbalanced soil nutrients and abnormal ground temperatures. Fields affected by these conditions should avoid planting Denghai 9, as it performs better in soils with balanced nutrients and higher maturity levels. These conditions promote strong plant growth and higher yields.
Weather patterns, such as winter snowfall and temperature, can help predict growing conditions for the following season. If the previous winter had little snow and was not very cold, the following summer may bring more rainfall and lower accumulated temperatures. In this case, long-season varieties may not mature properly, so shorter-cycle varieties are recommended. On the other hand, if the winter was cold and snowy, summer conditions tend to be drier with higher accumulated temperatures. During such times, drought-resistant varieties are preferred, and even some late-maturing varieties can be considered.
When selecting seeds, farmers should look for reliable sources. Quality seeds typically come in sealed packaging with clear labeling, including the seed company's name, address, and contact information. The label should clearly state the production date, purity, clarity, moisture content, and germination rate. High-quality seeds are uniform in shape, size, and color, making them easier to identify and handle during planting.