论文部分内容阅读
武威地区是春麦区。七十年代初发现小麦全蚀病在个别社队严重发生,1975年全区大发生。从1976年开始,我们对小麦全蚀病发病规律和防治措施进行研究,取得了初步结果。一、小麦全蚀病的危害为测定小麦全蚀病的危害程度,在连作三年的麦地,挖下各级病根株各30株分别考种:株高、节长(1、2、3及穗节)、穗长、小穗数、不孕小穗百分率、小穗密度、穗粒数、小穗粒数、千粒重、茎粗(基部、顶部)和旗叶面积共14项。各项与病根级数进行相关性分析。结果,除小穗密度之外,其余13项的相关系数皆为显著或极显著,摘其与产量直接有关的7项
Wuwei area is spring wheat area. In the early seventies found that the total eclipses of wheat in individual commune and grave occurred in 1975, the region occurred. Beginning in 1976, we studied the etiology and control measures of wheat eclipse and achieved preliminary results. First, the harm of wheat eclogism To determine the extent of the harm of wheat ecliposis, in the continuous cropland of three years, dug the root strains at all levels of 30 strains were tested: plant height, length (1,2,3 Spike length, spikelet number, spikelet percentage, spikelet density, spikelet number, spikelet number, grain weight, stem diameter (base, top) and flag leaf area. The correlation with the root cause of the disease. As a result, except for the spikelet density, the correlation coefficients of the remaining 13 items were all significant or extremely significant, and the seven items directly related to the yield