Luoping County has a corn planting area of ​​280,000 mu. It needs 840 tons of hybrid corn seeds each year. In 2006, the county produced only 2,000 mu of crops in the season, with an average yield of 160 kg per mu. The annual output of corn hybrid seeds is more than 300 tons. The gap in hybrid seeds reached more than 500 tons.
Located in the low-heat valley area, the village of Depei in Luoping County has an average annual temperature of 16°C. The average annual rainfall is 1319.5 millimeters. The annual sunshine is over 1,800 hours. The climate is humid, with sufficient heat and good irrigation conditions. It is suitable for seed production. However, due to the difficulty in selecting the isolation zone for the production of the season, and the fact that the seeds are harvested in a rainy and rainy weather, the seeds could not be put in storage in time, which has a serious impact on seed marketing. Therefore, the contradiction between the supply and demand of maize hybrid seeds in Luoping County is very prominent. Luo Pingxian Seed Company in 1995 to solve this problem, in the village of Germany to carry out the spring and seed production trials and success, to the end of 2006, the total area of ​​spring propagation of more than 3,000 acres, the average yield of 120 kg per mu.
The spring multi-cropping seed production technology of Teide Village is mainly through time isolation, so the string powder is small, the seed purity is high, the seeds are in place early and the morning market is set to the minimum, and the cost is reduced, and the yellow yam is fully utilized after harvesting. The idle land has opened up new avenues for increasing agricultural production and increasing farmers' income.
Prepare all preparations before sowing
The sun seeds are used to increase the germination rate and promote the seeds to germinate neatly. The selected parent seeds are sunned for 1 to 2 days before sowing.
To determine a reasonable ratio, to increase the seed setting rate is generally based on the mother's ability to accept pollen or paternal pollen size. The female parent is either 6:1 with strong pollen or parental pollen, and the female parent is either 5:1 or 4:1 with poor pollen or a small parental pollen.
For the male parent, three stages of sowing are carried out at an interval of 5 to 7 days, and the third period of the total parenting of the paternity protection line can guarantee the extension of the pollen supply period and sufficient effective pollen amount.
High-yield cultivation techniques
Choose a good land, safety isolation choice leeward sunny, flat terrain, good soil fertility, irrigated sites with irrigation conditions is appropriate, the layout of the isolation zone.
The whole geography must be done to make fields flat, soil fine, and ditch straight so as to facilitate irrigation and drainage.
Specifications sowing, covering the film in accordance with the time determined by the parents of the wrong time and a reasonable ratio of timely sowing (late February to early March), the use of plastic film coverage, in order to facilitate warming and moisturizing.
Field management seed breaks the film promptly after emergence, 3 to 4 leaf seedlings, 5 leaves Dingmiao, according to the seedlings timely fertilizer and cultivator management. The maternal management focus is on Miao Qi, Zhuang, and Zhuang, ensuring good growth and emasculation; and the focus of the paternal management is on ensuring seedling growth and improving the quantity and quality of pollen.
Prevention and control of underground pests due to spring drought and low temperatures, is conducive to the occurrence of small tigers. In particular, low-lying areas, where the night tide with high groundwater level or sandy loam with loose soil are prone to permeable water and fast drainage, are suitable for the breeding of small ground tigers. Therefore, more pests occur and serious damage is caused. Prevention and control of small tigers should be based on the time of the damage, according to local conditions, spring plowing before spring sowing, eliminate some of the eggs and weeds in early spring host, after emergence with organic phosphorus insecticide spray or made 5% poisonous soil insecticide and seedlings .
Flower forecast adjustment
Although the sowing date has been adjusted according to the parental growth period, the climate conditions and parental adaptation are different in different years. In the event of drought, the flowering period must be predicted. During the jointing period, the fast-growing parents should be controlled. The slow-growing parents should promote growth. In the flowering period, the father is early, and the female parent has 1 to 2 leaves emasculated, and the female parent cuts the temporal lobe; the male parent cuts the mother's filigree at a later stage to enhance its ability to accept pollen, and at the same time artificially assist pollination and other measures In order to ensure the purity of seeds, increase the production of seed production purposes.
Strictly go to parents
Before sowing, the grains were picked up, and the hybrids, seedlings, suspicious and weak seedlings were removed at the seedling stage. At the same time, the female parent had to go to the size seedlings and leave uniform seedlings. The father had to go to the intermediate seedlings and leave the seedlings. The flowering period is strictly decontaminated, especially for the parent line's miscellaneous strains and is not intended to be broadcast on the parent line in the parent line when planting. At the end of the flowering period, the father is cut off. When harvesting, the mixed bag with different spike shape, grain type, shaft color, and grain color is eliminated, thereby preventing mixing.
Motherhood is the most important thing
The mother must be advanced, clean, thorough and deeply buried. That is, before the mother's ear is exposed, it is necessary to emasculate or carry one or two leaves to emasculate. For the missing loose powder strain, it is necessary to cut off the female spine strain around the radius of 5 meters.
Harvest and Management
After ripening, timely harvest (from late June to early July), and after harvest, remove the mixed bag, diseased ear, prevent moldy rot from affecting the germination rate, pay attention to anti-miscellaneous preservation, and prevent human-made mechanical mixture.
Luoping Datian Seed Company
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