杂交玉米毕三1号和毕三2号的研究及应用

BREEDING AND APPKICATION OF HYBRID MAIZE VARIETIES BISAN 1 AND BISAN 2

玉米杂交种毕三１号和毕三２号系毕节地区农科所分别以自育的优良杂交种毕单３号（４１１×４４９）、毕单４号（４０５×４１１）为母本，自交系７９～３１为父本，于１９８６年组配，经多年试验鉴定选择培育而成。两品种均是白色籽粒，中、中偏硬粒型，产量高，品质好，抗性强，适应性广。已在毕节地区７县（市）大面积推广应用，截至１９９５年，累计面积２６．０１万亩，净增玉米８８８．１４万ｋｇ，净增产值１３４９．９７万元。

Bisan 1 and Bisan 2,two hybrid maize varieties,belong to middle and approximate flint type with whiteseeds.higher yield,good quality,strong resistance to drought and adaptability,were respectivelycombinated from hybrid maize Bidan 3(411×449)and Bidan 4(405×411)as female parent and self-line 79-31 as male parent in 1986,and bred after several yields' test and identification. They were largely planted in7 counties(cities)of Bijie prefecture. The total area was up to 260 thousand mu,and increased 8.88 millionkilogram of seed output and 3 5 million yuan respectively to 1995.