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为了不断提高我区玉米产量,我所先后引进了中单2号和陕单9号,并与地、县种于、农技部门协作进行多点试验示范,现将引种结果总结如下,并提出推广意见,供生产上参考。一、产量表现中单2号1976年引入我区。1978年在留坝县从海拔700米到1250米的川道、半山、高山等不同类型地区设置5个试验点。中单2号在4个点上产量居第一位,一个点居第三位,5个点平均亩产1017斤,比陕单1号增产22.4％。1979年在全区11个县37个点上进行大区示范对比,据汉中、南郑、城固、西乡、镇巴5县13个春播点(海拔460-1240米)统计,亩产425—889斤,比对照(白单4号、郑单2号、陕玉683、陕单1号、陕
In order to continuously improve the corn yield in our district, we have introduced Zhongdan No.2 and Shandan No.9 in succession and carried out multi-point experiment and demonstration with the cooperation of prefecture and county departments and agricultural technology departments. The results of the introduction are summarized as follows Promote advice for production on the reference. First, the production performance in the No. 2 1976 introduced to my area. In 1978 in the dam County from 700 meters to 1250 meters above sea level, halfway mountain, mountain and other different types of areas set 5 test points. The output of No. 2 in No. 4 ranked the first place, the third place in a single point, and the average yield of 5 points was 1017 kg, an increase of 22.4% over that of No. 1 in Shandan. In 1979, a total of 37 counties in 11 counties in the region were selected for demonstration. According to the statistics of 13 spring-sowing spots (460-1240 meters above sea level) in Hanzhong, Nanzheng, Chenggu, Xixiang and Zhenba counties, the yield 425 -889 kg, compared with the control (white single No. 4, No. 2 Zhengdan, Shaanxi Yu 683, No. 1 Shaanxi Shan