What should be noted for high-yield summer corn planting?
What should be noted to achieve high yield when planting summer corn? Please give an introduction. To achieve high yield when planting summer corn, the following aspects should be noted: 1. Careless selection of seeds. Because the current seed propagation system is still not perfect enough, substandard corn seeds still account for a relatively large proportion. Some farmers, coveting cheapness, buy from small vendors...
What should be noted to achieve high yield when planting summer corn? Please give an introduction.
To achieve high yield when planting summer corn, the following aspects should be noted:
1. Careless selection of seeds
Because the current seed propagation system is still not perfect enough, substandard corn seeds still account for a relatively large proportion. Some farmers, coveting cheapness, buy so-called improved seeds at low prices from small vendors or informal seed business departments, resulting in serious yield reduction.
2. Unreasonable planting density
Too high planting density is a relatively prominent problem in current summer corn production. For example, some farmers planting "Nongda 108" left more than 5,000 plants per 667 sq m (1 mu), about 1/3 more than the suitable density for this variety. Because the density is too high, the growth and development of individual plants are poor, the rate of empty stalks is high, the ear tip of the female ear is severely bare, and lodging occurs to varying degrees, causing yield reduction.
3. Unscientific fertilization
In fertilization, there is generally a phenomenon of emphasizing nitrogen fertilizer, neglecting phosphate fertilizer, and ignoring potash fertilizer and microelement fertilizers. Because crop yield is restricted by the law of the minimum nutrient. Applying too much nitrogen fertilizer alone cannot achieve high yield. Instead, excessive nitrogen fertilizer application causes poor lodging resistance and serious pests and diseases, resulting in yield reduction to varying degrees. In addition, improper fertilization timing and blind application of certain "corn special fertilizers" with too low effective nutrient content (note: based on the pure content of nitrogen, phosphorus, and potassium; medium and trace elements should not be counted) will both cause yield decline.
4. Not watering in time
The mentality of relying on the sky and waiting for rain is serious. Often, instead of watering the "key water" according to the water requirement pattern of corn, farmers only water "life-saving water" when drought occurs, thus seriously affecting yield.
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