How to plant a good corn planting field

As agriculture increases production and income, the seeds play a decisive role. In order to obtain high-quality and high-yielding corn hybrid seeds, we must first plant good crops. After years of production practice, the following experience has been obtained.

I. Arranging isolation is a prerequisite for good farming.

Different from the production field, the hybrid production field must have a strict isolation area around it. This is the prerequisite for ensuring the purity of the hybrid seed. Isolation is divided into spatial isolation, time isolation, and barrier isolation. According to the reality of Liaoning, time isolation has great limitations and it is not convenient for universal adoption. In production practice, most regions use natural conditions such as mountainous areas and spatial isolation to ensure safer and more reliable seeds. Segregation should be strictly conducted in accordance with standards. According to national standards, when spatial isolation is used, the horizontal distance between hybrid corn-making and other corn pollen sources should be no less than 300 meters; sweet, waxy corn and white corn should be above 400 meters.

Second, do a good job of soil fertigation, is a good system of farming guarantee

Soil preparation and fertilization are essential tasks before sowing, and they are also basic tasks. Farming fields should be farmland without quarantine disease, flat terrain, uniform soil, fertile soil, convenient drainage and irrigation, and contiguous land. Top Ling preparations, in addition to the net root, top pulp for rake, dumplings compaction, the return slurry to remain in the soil, improve soil moisture. At the same time, fully understand the status of soil nutrients, determine the type and quantity of fertilization. In recent years, corn crops have become more severe and there are serious shortages of certain nutrients in the soil. Fertilization should focus on targeting and avoid blindness.

Third, preparing parent seeds is the basis for good farming

First understand the algebra of the parents, provenance, growth characteristics, purity, germination potential, germination rate, etc., and choose a reliable parental seed. The parent seeds should be selected and air-dried before going down to remove impurities, improve species, and do a good germination test to accurately grasp the seed germination potential, germination rate and other conditions. According to the seed type and germination potential, the soil sowing time and temperature were used to determine the sowing time, and the seed amount was determined in combination with the germination rate. It is best to apply seed coating. Because the seed coating agent can prevent and treat pests, it can also play a role in increasing fertilizer, especially to compensate for the lack of nutrients caused by long-term continuous cropping. However, the seeds after coating must be tested for germination, and the safety of storage and use must be observed.

IV. Doing well in the wrong time sowing is the key to producing high yields in farming

The sowing date of the farming system depends on the characteristics of both parents and the soil temperature and soil moisture content. Generally 5 cm deep from the surface, the soil temperature is stable through 10 °C -12 °C can be sown. If the spring drought, soil moisture is not good, and no irrigation conditions, it is necessary to fight against drought and sowing, to ensure the normal maturation of autumn seeds. Before sowing, the flowering period of both parents should be accurately grasped, and the wrong time should be sown to ensure that the flowering period meets. According to practical experience, if special climatic conditions are encountered, the father and mother may have earlier or delayed the flowering period, and climate and flowering forecast should be made in advance to avoid the untimely flowering period. In general, when the mother is sown at the time of sowing, the father is divided into two periods, that is, a section of 5 meters on the same father's line. The father is 3 meters in the first period and 2 meters in the second period. It can prolong the pollination time of father and mother and promote the flowering period. It should be emphasized that the father and mother are forbidden to plant on the same line so as not to be mixed. The planting density of the father and the mother must be determined by factors such as variety and fertility. The parent and female parent must be moderately planted and not too large.

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