CAJ | 학술논문

适宜的种植密度有助于发挥高粱品种的增产潜力。为了确定中晚熟矮秆高粱新品种在旱地的合理种植密度,在山西省晋中市太谷县采用随机区组设计方法,研究种植密度（7.5～15万株/hm2）对农艺性状及产量的影响。结果表明：随着种植密度的增加,茎粗呈减小趋势,而株高、单株叶面积和可见叶片数无显著变化;种植密度对产量性状的影响主要表现在千粒重和单穗重,两者与产量均呈显著负相关,且两者对产量影响有较高的协调性。在中晚熟旱地高粱种植区,通过增加种植密度可显著提高籽粒产量,种植密度为15万株/hm2时其籽粒产量最大。该项研究为旱地春播中晚熟矮秆高粱增加种植密度提供了理论与技术支撑。
괄의적충식밀도유조우발휘고량품충적증산잠력。위료학정중만숙왜간고량신품충재한지적합리충식밀도,재산서성진중시태곡현채용수궤구조설계방법,연구충식밀도（7.5～15만주/hm2）대농예성상급산량적영향。결과표명：수착충식밀도적증가,경조정감소추세,이주고、단주협면적화가견협편수무현저변화;충식밀도대산량성상적영향주요표현재천립중화단수중,량자여산량균정현저부상관,차량자대산량영향유교고적협조성。재중만숙한지고량충식구,통과증가충식밀도가현저제고자립산량,충식밀도위15만주/hm2시기자립산량최대。해항연구위한지춘파중만숙왜간고량증가충식밀도제공료이론여기술지탱。
The suitable combination of planting density was favorable for the yield increase of sorghum cultivar. In order to determine rational planting density of sorghum and to fully develop yield-increasing effect, a field trial with a sorghum variety‘Jinzhong 911’was conducted in Taigu, Shanxi Province, China to investigate the effects of different planting densities （ranging from 75000 to 150000 plants/hm2） on main agronomic characters and yield in a randomized block design. The results showed that with the increase of planting density, stem diameter tended to decrease, while the plant height, leaf area and leaf number seen no significant change in trend. The effects of planting density on yield traits were mainly 1000-kernel weight and weight/panicle, and yield both showed a significant negative correlation, and both have a higher impact coordination on yield. In the late-maturing sorghum growing areas of dry land, by increasing planting density could significantly increased grain yield. It was concluded that when planting density 15.00 × 104 plants/hm2, the highest sorghum grain yield. The study of middle-late maturing short-stalked sorghum in dry areas to increase plant density provides a theoretical and technical support.