论文部分内容阅读
玉米单交种京杂6号是北京市东北旺农场科技站1974年育成的,经过五年来的观察、品比、示范和推广,普遍反映京杂6号品质好、产量高、适应范围广,是一个适宜春播和套种的优良玉米单交种。1979年在河北、山东、天津和北京郊区种植面积达100万亩左右,大面积春播亩产超过1,000斤,麦田套种亩产600斤以上。预计今年播种面积可达300多万亩。主要性状京杂6号(自330×许052)系中熟和中晚熟单交种,从播种至成熟需要大于
Corn hybrid Beijing Jingza 6 is bred in 1974 by Beijing Dongbeiwang Farm Science and Technology Station. After five years of observation, comparison, demonstration and popularization, it generally reflects that Jingza 6 has good quality, high output and wide adaptability. Is a suitable spring sowing and intercropping fine corn variety. In 1979, the planting area in Hebei, Shandong, Tianjin and Beijing suburbs reached about 1 million mu, the area covered more than 1,000 kg per mu in spring and 600 kg per mu in wheat fields. It is estimated that the sown area will reach more than 3 million mu this year. The main character Beijing hybrid No. 6 (since 330 × Xu 052) Department of medium and late maturing single cross-species, from sowing to mature needs more than