The compact corn has the characteristics of compact plant, rushed leaves, well-developed root system, resistance to lodging, no cracking of the temporal lobe when the ear is ripe, live stalk maturation, high yield, and good quality. Through a few years of practical exploration, we have summed up a set of high-yield seed production and preservation technology, as described below.
1. Separation of selected areas should be based on good isolation conditions, convenient transportation, certain corn seed production experience, and township-level villages and villages to establish a production base. Consecutive flat fertility production was selected. The isolation zone shall be strictly determined after the selection of the site, and the spatial isolation shall not be less than 350 meters. If there is a wind direction effect in the favorable terrain, the isolation distance shall not be less than 800 meters. It is forbidden to grow corn in the isolation area.
2. It is absolutely reliable to sow the source of the parent seeds, so that they must be carefully selected before sowing, and the exceptions, defects, diseases and miscellaneous grains can be eliminated. The female parent planted wide and narrow rows with a width of 66.8 cm and a narrow row spacing of 33.2 cm. The father was planted in a female parent row with a spacing of 0.8 meters.
The compact maize seedlings are compact, and the leaves are flushed. They should be planted properly in accordance with the soil strength. It is advisable to use 4200-5100 strains per parent and 600-700 strains per parent. During the wrong time sowing should be appropriate to leave the father planting area around the planting field and do auxiliary pollination and powder collection. Seedlings grow to three leaf-time seedlings, and five leaves are seedlings. The mother plants left the middle seedlings and went to size seedlings; the father left the size seedlings and went to the middle seedlings.
3, flowering regulation and auxiliary pollination flowering period, the father should be less than 1-2 leaves of the mother, otherwise it should be timely to apply partial fertilizer, partial management, spraying phosphorus outside the roots, cut filaments, cut leaves and other regulatory measures. If necessary, assisted pollination was conducted. At about 10 o'clock on the sunny day, fresh pollen was collected and given to the female flowers with a pollinator.
4, to male, cut the father when the tassel formation, there is no longer when the leaves, to touch and emasculate, to be male to be emasculated, timely and thorough. The width of the planting system for sowing the seed, the father does not take up the line, when the father completed the loose powder deduction tassel dryness should be promptly cut off, not only conducive to seed preservation, but also can improve the ventilation and light conditions in the field, improve photosynthesis, reduce disease, Improve seed production.
5, stand stalk drying due to tight corn ear tight tassels, ear ripening period, such as rain is too large, will cause mildew rotten crop, from the output will be reduced by half, while the weight is not. In order to prevent this from happening, the following measures can be taken: After the ear pollinates 20 days, the loquat leaves are peeled off. After the grain is hardened, the spike shank is broken, but it is not separated from the stalk, and then the stalks above the ear are cut off and dried continuously. Reach the mark. In this process, bird and animal harm should be prevented.
6, to miscellaneous, harvesting in the whole process of seed production to be uninterrupted to go to the miscellaneous, after harvesting to organize the farmers in the upper house drying, rat, mold.
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