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实验设计 试验在非灌溉条件下于1978—1980年的三年内完成。供试品种20个,包括关中地区有一定种植面积的丰3—189、反修6号、泾惠30、郑引一号、7118、关村1号,也有接班品种渭麦4号、小偃系统以及国外材料伊利亚、阿魁雷、意2等。试验分三叶期、冬前期、春季接毒及对照四个处理,两次重复,随机排列,每品种播种2行,行长1尺、行距1尺、株距1寸。处理区采取人工接毒,每苗2虫,自然条件下发病,对照区用药剂保护。统一在5月中旬调查发病情况。病情
Experimental design experiments were completed within three years of 1978-1980 under non-irrigation conditions. There were 20 cultivars under test, including Feng 3-189, Anshun 6, Jinghui 30, Zhenglian 1, 7118, Guancun 1 at the Guanzhong area, but also the succession variety Wei Mai 4, Xiaoyan System and foreign materials Iliya, Aguirre, Italy 2 and so on. The experiment was divided into four-leaf stage, pre-winter and spring with four treatments of poisoning and control. The experiments were repeated twice and arranged randomly. Each variety was sown two rows with a length of 1 foot and a row spacing of 1 foot. The treatment area to take artificial poisoning, 2 insects per plant, the incidence of natural conditions, the control area with pharmaceutical protection. Unified in mid-May to investigate the incidence. Condition