杂交包谷是由两个各具有较多优良性状的包谷品种或包谷自交系进行杂交所获得的后代,它比双亲的抗逆性强,植株健壮,根系发达,产量高。因此,充分利用杂种优势,积极推广杂交包谷,是提高包谷产量行之有效的措施之一。我省目前生产上推广的优良杂交包谷种有乌苎双交种、鲁双号、威楚单交种、威可单交种、引金顶交种、云杂三号等,都是人工培育成功的,它们具有抗旱、抗倒伏、抗病、耐肥等优点,一般都比现有推广良种增产百分之十五至百分之三十。配制包谷杂交种要做好几项工作:一、选择好制种地。要选土壤肥力中等,排灌方便,特别是隔离条件好的地块作制种地。二、父母本种植比例要恰当,才能 Hybridization Valley is a progeny derived from crossing two hybrid rice cultivars with different traits with better traits or inbred lines with different traits. It has stronger resistance than the parents, strong plants, developed roots and high yield. Therefore, making full use of heterosis, and actively promoting the hybridization of corn is one of the effective measures to improve the yield of corn. At present, the province’s production to promote the excellent hybrid baguin Wuzhu double cross species, Lu double number, Wei Chu single cross, Wei can be a single cross, Successful, they have the advantages of drought resistance, lodging resistance, disease resistance, resistance to fertilizers, etc., generally yielding 15% to 30% more than the existing popularized varieties. Prepared Baogu hybrids to do several things: First, choose a good system of breeding. To select medium fertility of soil, irrigation and drainage facilities, especially good conditions for the isolation of land for seed production. Second, the proportion of parents should be appropriate to plant, ability