Corn seedling management measures
The key to corn seedling management is to properly control the growth of stems and leaves, that is, to control the growth of the stems and leaves, to make them more rooted, stems flat, dark green leaves, thick leaves, thick and solid piers, individual robust, strong and not prosperous, the group neat. The specific measures are:
First, enough seeds to ensure that the whole seedlings. After emergence of corn, it is necessary to check the emergence of seedlings in a timely manner and find that the seedlings must be replanted in a timely manner. Before the three-leaf stage lack of seedlings, with a full seed soaking germination watering reseeding. In addition, the lack of seedlings can also stay in the vicinity of two strains to remedy.
Second, early seedlings, Dingmiao timely. When maize grows to three to four leaves, it should be seeded with time, removing weak, white, yellow, disease, inferior, and hybrid seedlings. When five to six leaves were collected, the seedlings were planted at the planned density, and all the remaining seedlings were unplugged.
Third, timely fertilizer. Maize topdressing should be applied during the five-leaf spread, that is, during the four-to-six leaf stage, especially for interplanting corn and then sown summer maize. Top dressing should follow the principle of light weight, ear weight and grain fertilizer.
Fourth, timely cultivator. Seedling cultivating usually takes two to three times. The first time the seedlings were planted, the cultivator had a deep understanding of the principle of “shallow seedlings next to the middle, deep in the middle of the seedlingsâ€. This will not only eliminate weeds, but will not press the seedlings. Deep ploughing is usually 3-5 cm. The second and third time are carried out before jointing, and the depth of cultivation is generally about 10 cm. Although it will cut off some fine roots, it can promote new roots.
Fifth, suitable period seedlings to promote strong. The methods commonly adopted by seedlings to promote growth are: control of fertilizer and water, deep cultivator, and soil drying. Corn seedlings should follow the principle of darkness, no yellowing, no fat, no phlegm and no dryness. That is to say, the dark green leaves, soil fertilizers, and sturdy seedlings are the strong seedlings. Seedlings are usually planted in summer and intercropping maize for about 20 days. There is no effect when the time is too short. If the time is too long, young and old seedlings will be easily formed, which will affect later growth. When the seedlings are over, fertilizer and water should be immediately applied to promote growth.
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