CAJ | 학술논문

倒伏对谷子产量和品质以及机械化收获均有显著影响。为了筛选适宜机械化收获的谷子品种，以近几年通过国家鉴定、省级审定和参加国家区试的22个谷子育成品种为试材，利用倒伏系数评价了参试谷子品种的抗倒性；通过分析茎秆性状（株高、单茎鲜重、根量、茎秆抗折力、基部4节的长度、茎秆机械强度）与品种倒伏系数的相关关系，明确了影响谷子抗倒性的关键性状指标；并以抗倒性有显著差异的几个谷子品种为代表，探讨了这些关键性状指标如何影响谷子的抗倒伏能力。结果表明：济谷14、济谷16和冀谷31的倒伏系数均＜0.15，抗倒伏能力很强； M2173、济谷13、衡0950和济谷12的倒伏系数均＞0.29 ，抗倒伏能力较弱。本研究条件下，谷子株高和单茎鲜重与倒伏系数呈正相关，基部4节的长度与倒伏系数呈负相关，但关系程度均不密切；根量、茎秆抗折力和茎秆机械强度与谷子抗倒性有非常密切的关系。将抗倒性明显不同的7个谷子品种进行了3个关键性状指标的对比分析，结果发现，根量越大，茎秆抗折力越大，茎秆的机械强度越大，谷子品种的抗倒伏能力越强，越适合机械化收获。
도복대곡자산량화품질이급궤계화수획균유현저영향。위료사선괄의궤계화수획적곡자품충，이근궤년통과국가감정、성급심정화삼가국가구시적22개곡자육성품충위시재，이용도복계수평개료삼시곡자품충적항도성；통과분석경간성상（주고、단경선중、근량、경간항절력、기부4절적장도、경간궤계강도）여품충도복계수적상관관계，명학료영향곡자항도성적관건성상지표；병이항도성유현저차이적궤개곡자품충위대표，탐토료저사관건성상지표여하영향곡자적항도복능력。결과표명：제곡14、제곡16화기곡31적도복계수균＜0.15，항도복능력흔강； M2173、제곡13、형0950화제곡12적도복계수균＞0.29 ，항도복능력교약。본연구조건하，곡자주고화단경선중여도복계수정정상관，기부4절적장도여도복계수정부상관，단관계정도균불밀절；근량、경간항절력화경간궤계강도여곡자항도성유비상밀절적관계。장항도성명현불동적7개곡자품충진행료3개관건성상지표적대비분석，결과발현，근량월대，경간항절력월대，경간적궤계강도월대，곡자품충적항도복능력월강，월괄합궤계화수획。
Lodging had serious affect on grain yield and quality of foxtail millet as well as mechanized harvesting.In order to select millet varieties suitable for mechanized harvesting , taking 22 millet bred varieties as experimental materials, which through the national identification, the provincial approval and had joined the national or regional test recent years, the lodging resisitance of 22 foxtail millet varieties were evaluated using lodging coefficient , the key character index affect the foxtail millet lodging resistance was definited by analyzing the correlation of stalk traits ( plant height, fresh weight of above-ground stem and head, root weight, stem broken strength, length of 4 internode, mechanical strength ) and lodging coefficient, then taking several varieties of foxtail millet with significant difference in lodging resistance as represents , these key indicators is how to affect the lodging resistance of foxtail millet was discussed.The results showed that the lodging coefficient of Jigu14, Jigu16 and Jigu31 all smaller than 0.15, the lodging resistance ability was very strong.The lodging coefficient of M2173, Jigu13, Heng0950 and Jigu12 were greater than 0.29, the resistance lodging ability was weaker.Under the conditions of this study, there was a positive correlation between plant height, fresh weight and lodging coefficient, there was a negative correlation between length of 4 internode and lodging coefficient , but the relationship of both were not close, the relationship of root weight, stem broken strength, stalk and mechanical strength were very close with lodging coefficient.And the contrastive analysis was made with three key indicators of seven foxtail millet varieties with significant difference in lodging resistance, theresults showed that the root weight greater, stalkstem broken strength stronger, stalk mechanicalstrength greater, the lodging resisitance ability offoxtail millet stronger, the more suitable for mechanized harvesting.