CAJ | 학술논문

以国审油菜盐油杂3号为材料，设置15、20、25、30以及35万株·hm-25种种植密度，分析不同种植密度对油菜农艺性状及产量的影响。研究结果表明：1)密度高低对株高、分枝高度、有效分枝数、单株有效角果数等指标均有明显影响，随着密度的增加呈先上升后下降的趋势；2)高密油菜群体株型结构整齐更能适合机械化收获；3)利用混合型产量密度模型对密度和产量两个因素进行非线性拟合，最终推导出最优方程，利用最优方程计算出油菜直播最优密度。
이국심유채염유잡3호위재료，설치15、20、25、30이급35만주·hm-25충충식밀도，분석불동충식밀도대유채농예성상급산량적영향。연구결과표명：1)밀도고저대주고、분지고도、유효분지수、단주유효각과수등지표균유명현영향，수착밀도적증가정선상승후하강적추세；2)고밀유채군체주형결구정제경능괄합궤계화수획；3)이용혼합형산량밀도모형대밀도화산량량개인소진행비선성의합，최종추도출최우방정，이용최우방정계산출유채직파최우밀도。
Taking the rape Yanyouza No.3 as the test material,the study explores the effects of different planting density on agronomic traits and the yield of mechanical direct seeding rapeseed,with five planting densities,that is,150 000 strains·hm-2 ,200 000 strains·hm-2 , 250 000 strains·hm-2 ,300 000 strains·hm-2 and 350 000 strains·hm-2 .The results show that, increasing the density of rape,plant height,the number of branch,the number of pods per plant and the seed number per pod show a downward trend,while branching height and 1 000 grain weight increase significantly.High-density populations of plant type are more suitable for mech-anized harvesting.This study also uses the hybrid yield-density models for the nonlinear fitting between the density and yield,and finally derives the optimal equation to calculate the optimal density of direct seeding rape.