CAJ | 학술논문

以晚熟稀植品种丹玉39和中晚熟密植品种郑单958为试材，通过5年的定点栽培试验，对玉米群体结构与年际间气象因子变化的关系进行研究。结果表明：玉米群体结构对年际间气象因子变化的反应不同，并导致不同年份的适宜密度和适宜密度范围发生变化，最终对产量造成影响。降水量及时间分布是影响群体结构的最主要因子，其次为日照时数。受影响最大的是叶面积指数，其次依次为叶向值、株高、透光率。6月下旬的降水量对LAI影响较大；7月上旬日照时数与叶向值密切相关；株高形成期的降水量是影响株高变化的根本原因。
이만숙희식품충단옥39화중만숙밀식품충정단958위시재，통과5년적정점재배시험，대옥미군체결구여년제간기상인자변화적관계진행연구。결과표명：옥미군체결구대년제간기상인자변화적반응불동，병도치불동년빈적괄의밀도화괄의밀도범위발생변화，최종대산량조성영향。강수량급시간분포시영향군체결구적최주요인자，기차위일조시수。수영향최대적시협면적지수，기차의차위협향치、주고、투광솔。6월하순적강수량대LAI영향교대；7월상순일조시수여협향치밀절상관；주고형성기적강수량시영향주고변화적근본원인。
The relationship between annual changes of meteorological factors and population structure of maize were studied through the 5-year experiment with Danyu 39 (late maturing variety)and Zhengdan 958 (mid-late maturing vari-ety)as test materials .The results indicated that the annual changes of meteorological factors had a significant effect on the population structure of maize and caused the changes of optimum density and suitable density range of different maize hybrids which affected the yield finally .Precipitation and its temporal distribution were the most important factors affect-ing population structure,followed by the sunshine duration .Leaf area index (LAI)was most heavily affected,followed by leaflet orientation value (LOV),plant height and light transmittance .LAI was influenced greatly by the precipitation in the last ten-day of June;LOV was closely related to the sunshine duration in the first ten-day of July;and plant height was fundamentally affected by the precipitation in formative period of plant height .