Seedling management of seed corn

Maize seedlings generally indicate that the period between seedling and jointing is the period of vegetative growth. The main growth characteristics of this stage are the rooting and differentiation of stems and leaves, the growth of the aboveground part is slow, and the roots grow rapidly.

The seedling period management of corn farming is different from that of Daejeon corn. Compared with the seeds of common Daejeon hybrids, the seeds of their parents are relatively weak in their own viability and must be carefully managed to achieve successful seed production. The central task of the field management at the seedling stage is to strengthen seedlings, nurture strong seedlings and level seedlings, reach seedlings, seedlings, solids, and stoutness, so that the parents grow normally and lay the foundation for a good flowering period.

The main technical measures for the seedling management of the maize seedlings:

Timely check seedlings, put seedlings, seal holes, prevent high temperature burning seedlings. The lack of seedlings in the system is generally not recommended for supplementary seedlings, because supplemental seedlings are often not able to keep up with the normal sowing seedlings, which are likely to cause seedlings to bully the seedlings. The growth is not neat, and in particular it will result in incomplete detasseling and increase the difficulty of post-management. If there is more seedlings and more ridges, the female seedlings cannot be cut with other corn seed replants or make-up seedlings, and they cannot be replanted with the original parent; if the parents are seedlings, the original parent can be replanted as soon as possible (before reseeding Can be soaked in advance).

In the spring of this year, the temperature is low and the ground temperature is low. To promote root barrowing and seedling growth, we need more cultivator and cultivator, usually 2-3 times. The last time of cultivator should be combined with soil cultivation to loosen the soil, raise the ground temperature, and promote the lower roots. Nurture the role of strong seedlings.

Morning, set seedlings. Maize production is usually seeded at 3-4 true leaves. The seedlings are the first process in the field to eliminate miscellaneous plants. Before the establishment of the seedlings, the hybrids are removed according to the characteristics of their parents such as leaf shade, leaf width, leaf sheath color, and growth potential, but they must not injure the seedlings. When the seedlings, the mother seedlings should maintain uniform and strong seedlings, and the male parent should keep large, medium, and small seedlings to extend the paternity powder time.

Control seedling pests and diseases. Seeds treated with a coating agent before sowing are generally free of pests or lighter. Maize seedling pests mainly include ground tigers and golden needles. We must do a good job in pest and disease monitoring and reporting, and we must promptly prevent and control once we discover it.

Seedlings. According to the public opinion, the seedlings should be sowed. If the dry land is wet, the wet land should not be driped. Generally, the seedlings will be 45-50 days old. The principle of “not to be black and not to be stingy” should be mastered, but it is generally better than Datian. The water was earlier and could not be affected by drought.

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