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How to choose spring sowing corn
Soil selection is crucial and depends on several factors, including topography. In areas with high temperatures, it's best to choose late-maturing or medium-late-maturing varieties that require a longer growing period. Flat lands are more suitable for medium-late maturing crops, while early-maturing or medium-early maturing varieties are ideal for alfalfa fields. This ensures that the crop adapts well to local conditions and maximizes yield potential.
Soil fertility also plays a key role in variety selection. For plots with high fertility, high-yield varieties should be chosen to take full advantage of the nutrient-rich environment. On the other hand, if the soil is less fertile, it’s better to go for resistant or hardy varieties that can thrive under challenging conditions.
Crop rotation is another important consideration. If the previous crop was soybean, which typically improves soil fertility, you can opt for high-yield crops. If corn was previously grown successfully, it may be continued. However, if the previous crop was affected by disease, avoid planting varieties that are susceptible to the same disease. Also, after three to four years of continuous cultivation of the same variety, soil depletion and variety degradation may occur, so it’s wise to introduce new varieties to maintain productivity.
Farmers with experience and access to proper farming techniques can grow high-input varieties that require careful management. Those with limited resources or less expertise should stick to low-maintenance varieties that are easier to grow and manage.
Disease resistance is another critical factor. Currently, maize rough dwarf disease is a major concern, often linked to imbalanced soil nutrients and abnormal ground temperatures. These conditions make it unsuitable for planting Denghai 9. Instead, this variety works best in soils with balanced nutrients and high maturity levels, where plants grow strong and produce high yields.
When estimating precipitation and accumulated temperature, farmers often use past weather patterns as a guide. If the previous winter had little snowfall and was not very cold, the following summer might bring higher rainfall and lower accumulated temperatures. In such cases, long-season varieties may not mature properly, so it's better to choose shorter-season types. Conversely, if there was heavy snow and a cold winter, the next summer is likely to be drier with higher accumulated temperatures. In these conditions, drought-resistant varieties are preferred, and some late-maturing options can still be planted safely.
Finally, when selecting seeds, quality is essential. Reliable seeds usually come in sealed packaging with clear information, including the seed company’s name, address, and contact details. The label should clearly state the production date, purity, clarity, moisture content, and germination rate. The seeds themselves should be uniform in shape, size, and color, indicating good quality and viability.
By considering all these factors—topography, soil fertility, previous crops, disease risk, climate patterns, and seed quality—farmers can make informed decisions that lead to better yields and more sustainable agriculture.