How to grow corn to get high yield?

Corn is one of the most widely planted food crops in my country and has a wide range of uses. In order to achieve high corn yields, we must not only select high-yield, disease-resistant, and lodging-resistant high-quality corn varieties , but also use efficient cultivation techniques. So how can we grow corn to get high yield?

1. Choose stable-yield corn seeds

High-yield corn seeds are the starting point for achieving a bumper corn harvest. In recent years, considering climate change and corn growing conditions, it may be more appropriate for farmers to choose stable-yield corn seeds, especially those red-axis corn varieties that are resistant to lodging, high temperature, moisture, rust, have high grain density, and dehydrate quickly, which are worth trying to plant.

2. Applying enough base fertilizer is the key to high yield

Fertilizer is the cornerstone of crop growth. Many farmers have misunderstandings about the use of corn base fertilizer, thinking that the 80-jin bag of corn fertilizer on the market is packaged according to the amount of fertilizer applied per acre. The correct amount of fertilizer should be determined according to soil fertility. About 120 kilograms of 40% high-nitrogen fertilizer should be applied to poor land, while no less than 100 kilograms should be applied to land with ordinary fertility.

At the same time, considering the demand of corn for medium and trace elements, 1,000 grams of medium and trace element fertilizers such as calcium, magnesium, sulfur, manganese, zinc, and boron should be applied per mu to maintain the balance of nutrients and lay a solid foundation for high corn yields.

3. Importance of topdressing during the big bell period

Many corn farmers adopt the strategy of "applying sufficient base fertilizer and neglecting topdressing", which saves labor but is not scientific. In addition to applying sufficient base fertilizer, top dressing is required at least once during the growth period of corn. Many farmers choose to apply fertilizer during the seedling stage or the trumpet stage, but this is not the best time. Top dressing during the trumpeting stage can not only replenish the nutrient consumption of corn during the reproductive growth period, but also provide good nutritional guarantee for the subsequent tasting, silking, filling and grain formation.

The trumpet-mouth stage is the best time to apply fertilizer after corn seedlings , although the plants are taller at this time, which brings certain difficulties to the topdressing operation. If the weather permits, farmers can apply high-nitrogen fertilizer to the roots before the rain, such as 20 kg of 30-6-0 high-nitrogen compound fertilizer per mu, to achieve ideal topdressing effects.

4. Strategies for controlling plant growth during the trumpet phase

Controlling corn growth helps to reduce plant height, strengthen stems, promote root development, enhance lodging and drought resistance, improve leaf photosynthesis, increase dry matter accumulation, and increase 100-grain weight and pollination rate. It is a key link in high-yield management. The best time to control growth is when the corn leaves are fully expanded and reach between 6 and 12 pieces, which is the period from the small trumpet stage to the large trumpet stage.

If the field fertility is sufficient and there is plenty of rainfall, growth control should be carried out in advance; conversely, in years with less rainfall, it should be appropriately postponed.

5. Pay attention to pest control and nutritional supplementation in the middle and late stages of corn production

From the corn flaring stage to the flowering and graining stage, corn growth shifts from simultaneous vegetative growth and reproductive growth to purely reproductive growth. Before the plants take shape, you should seize the opportunity to control pests and diseases and supplement nutrition. For example, the use of a formula of tebuconazole, oxathiapiprolin, zinc glycoside, humic acid foliar fertilizer , emamectin benzoate, indoxacarb and lufenuron can effectively prevent large and small leaf spot disease, southern rust, and corn borer, and promote the reproductive growth of corn, which is an indispensable link in high yield.

In order to save workload, some farmers may control corn growth and prevent diseases and pests at the same time, but this is not scientific. Targeted management at key nodes of corn growth is the key to achieving high yields. If you have missed the opportunity to optimize seed selection and base fertilizer dosage, then please put more effort into post-emergence topdressing, corn growth control, and pest and disease and leaf nutrient supplementation.