Prosperity of the South Maize technology _958

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Prosperity of the South Maize Technology
 
 
  Papers Key words Maize; inbred lines; seed; South fan technology   Abstract  can speed up the propagation of both the South fan speed, but also the purity of inbred lines for further identification. Introduction of maize in Southern Propagation techniques, including site selection, preparation before sowing, planting, field management, harvesting, etc., in order to provide prosperity for the southern corn reference.    Parental inbred lines is the basis for the preparation of hybrids. Parents did not complete a sufficient number of inbred lines, it can not preparing a sufficient number of hybrids, if the impure mixed parental inbred lines, hybrids made of high quality, will reduce the hybrid should yield. Therefore, the parental inbred lines to the same quantity and quality of attention. For these reasons, must be the South fan. Fan can speed up the propagation speed of the South, while the purity of inbred lines can be further identified. In recent years, Hainan's natural conditions and farming has changed a lot, and some new staff due to lack of experience of the South fan, although the cost of many, but the results are poor, not according to plan the seeds of prosperity back to the high purity, production in the coming year . Breeding many times I go to Hainan, and accumulated some experience, are summarized below for all to discuss.    1 election to    (1) isolation conditions are good. Corn is cross-pollination of crops, easy to mix, all selected to be the provision of separate areas, to achieve security isolation purposes. If I choose to spatial isolation, and the same distance of corn planting not less than 300 ~ 500m (Traditional farming if their thunder to 300m on the isolation, the next will have to 500m isolated thunder); if spatial isolation have difficulty using the time isolation, Traditional farming his own inbred lines of maize sowing and the neighboring staggered sowing, sowing staggered at least 15d; also have recourse to the mountains, villages, housing or into the woods to do the natural barriers to isolate or tall crops isolation; inbred breeding areas with tall crops if the isolation, cultivation of at least 100m or more, large tracts of Hainan bananas, vegetables and so can choose to use scaffolding.  (2) fertilizer and water conditions are good. Inbred growth potential is weak, the response of barren ground is very sensitive, so try to choose a fat land. An adequate supply of water and fertilizer during the growing season, field-based management to promote,You are not allowed to view links. Register or Login, especially in the ear can not Quefei without water before and after. Block scheduling irrigation to be convenient, the selected block and the drainage channels have a certain gap, there must be land or natural irrigation wells.  (3) If you choose a large space, should be selected to reduce the loss of Li village and those from the local traffic arteries, dry better than the paddy fields. Block selected, and the landlord must sign a good agreement. Includes site preparation, planting, middle management, post harvest care back up, every detail must clearly define the responsibilities and implement clear.    2 sowing preparation    (1) site preparation. Three to three-plow rake soil preparation, land leveling clod crushing, the Qiancha straw and weeds to clean up all the land outside, and then burned or broken straw. Ridge line spacing no less than 0.6m, or when the 1.1m (wide ridge double line), whether one or two lines, furrow depth not less than 0.3m, to facilitate the taking of water.  (2) basal cast and soil pests control. Ridge before the combination of site preparation, compound fertilizer (NPK ,15-15-15) 60kg/hm  2  as base fertilizer, applicator or cis of Summer may be to shun of Summer is appropriate. Prevention and control of soil pests, zinc parathion granules can 60g/hm  2  or 50% methamidophos produced toxic soil 300kg/hm  2  and fertilizer mixed application, applicator or Shun of Summer may also be at the local plant protection departments or professional under the guidance of agricultural store medication.  (3) cast poison. Hainan rodent rampant, not completely control may cause crop failure, prevention of zinc phosphide can be used, mixed with zinc phosphide bait per 40g 1kg, plus a small amount of sesame oil; also used 1% sodium 1 Diphacine 20 to 30 were mixed with bait, and add a small amount of animal oil. Each rat poison before planting should be 2 ~ 3d at start running to the ground around the area near the ridge Mizobe rat holes and more, is the key put in place.  (4) clean up the edge, headland and ditches. More eggs in these places, but also mice hiding place. Hainan to have had the water drains, soil preparation before planting must take these over the ditch clean up the weeds and garbage burned out. Herbicide used to edge, edge of a farm weed wiped out.    3 seeding    (1) the determination of sowing. According to meteorological department statistics, in general, the Typhoon in Hainan late or early November at the end of 10, entered the dry season in Hainan, which is Hainan, the year the golden season of crops. Therefore, the South fan of maize sowing should be carried out after November 10 is more secure.  (2) timely sowing. To see soil moisture, if the fall of relatively abundant rainfall, soil moisture is good, we must seize the time to sow, plant spacing can be a little dense than some of the north; If severe autumn drought, dry soil, ridge, after all, in which case, you can broadcast before irrigation, you can also after sowing irrigation. If the terrain is flat or the ridge is not very long, sub-irrigation methods can be used, each or every other furrow irrigation ditch are available, until the water moisture in the right time to go after sowing; if flat, ridge length is short (50m or less) after sowing irrigation should be, but must pay attention to every furrow irrigation, and water must not be over ridge. The former approach is too much trouble, but more secure.