CAJ | 학술논문

　　为了探索大豆新品种中黄30在承德地区的最佳种植密度，试验采用回归设计法，设种植密度18.0万、22.5万、27.0万、33.8万、36.0万和45.0万株/hm 2计6个处理，对不同种植密度下的大豆病虫害发生情况和产量进行了分析；并对其种植密度与产量的关系进行了回归分析，建立了回归方程。结果表明：在试验设定的密度范围内，随着种植密度的增大，大豆虫食率、褐斑病率和紫斑病率均呈先降低后升高的变化趋势，其中密度为22.5万株/hm 2时，3种病虫害的发生率均最低，分别为0.4％、0.5％和0.1％；大豆产量呈先增加后降低的变化趋势，产量与种植密度的二次回归方程为 Y ＝-2731.4259＋358.9022 X-5.0335X 2。本研究条件下，密度为33.8万株/hm 2时大豆产量最高，为3801.667 kg/hm 2。
　　위료탐색대두신품충중황30재승덕지구적최가충식밀도，시험채용회귀설계법，설충식밀도18.0만、22.5만、27.0만、33.8만、36.0만화45.0만주/hm 2계6개처리，대불동충식밀도하적대두병충해발생정황화산량진행료분석；병대기충식밀도여산량적관계진행료회귀분석，건립료회귀방정。결과표명：재시험설정적밀도범위내，수착충식밀도적증대，대두충식솔、갈반병솔화자반병솔균정선강저후승고적변화추세，기중밀도위22.5만주/hm 2시，3충병충해적발생솔균최저，분별위0.4％、0.5％화0.1％；대두산량정선증가후강저적변화추세，산량여충식밀도적이차회귀방정위 Y ＝-2731.4259＋358.9022 X-5.0335X 2。본연구조건하，밀도위33.8만주/hm 2시대두산량최고，위3801.667 kg/hm 2。
In order to explore the best planting density of new soybean variety Zhonghuang 30 in Chengde area, using the regression design method, with 6 planting densities of 18.0 ×104, 22.5 ×104, 27.0 ×104, 33.8 × 104, 36.0 ×104 and 45.0 ×104 plants/hm2, the yield, plant diseases and insect pests of soybean under different planting densities were analyzed and the regression equation between density and yield of soybean was generated.The results showed that in the experimental density range, with the increasing of planting density, the feed rate, brown spot rate and purple spot rate were decreased first and then increased , the occurrence rate of 3 kinds of diseases and insect pests were the lowest under the planting density of 22.5 ×104plants /hm2.The yield of soybean was increased first and then decreased, the quadratic regression equation between density and yield of soybean was Y=-2 731.425 9+358.902 2X -5.033 5X2.In the test conditions the yield was highest (3 801.667 kg/hm2) under the planting density of 33.8 ×104 plants/hm2.