CAJ | 학술논문

密度与播期是影响玉米产量最主要的栽培因素。为探索石玉9号高产栽培的适宜密度和播期,2010～2011年设置了52 500株/hm2（A1）、60000株/hm2（A2）、67500株/hm2（A3）、75000株/hm2（A4）、82500株/hm2（A5）和90000株/hm2（A6）6个密度处理以及6月10日（B1）、6月15日（B2）、6月20日（B3）、6月25日（B4）、6月30日（B5）和7月5日（B6）6个播期处理,研究不同密度和播期处理对石玉9号产量的影响。结果表明：2010年和2011年石玉9号产量均随密度的加大呈先增加后降低趋势,分别在A4和A5处理下达到最高,均在A1处理下最低;6个密度处理的2 a平均产量顺序为A5〉A4〉A3〉A6〉A2〉A1,其中,A4与A5处理差异不显著,但两者均极显著〉其他处理。2010年和2011年石玉9号产量均随播期的推迟呈逐渐降低趋势;6个播期处理的2 a平均产量顺序为B1〉B2〉B3〉B4〉B5〉B6,且不同播期处理的差异均达到了极显著水平。密度和播期均对玉米产量产生极显著影响,在冀中南地区石玉9号适宜密度为75000～82500株/hm2;适宜播期为6月10日,且不晚于6月25日,在茬口条件允许的情况下尽量早播。
밀도여파기시영향옥미산량최주요적재배인소。위탐색석옥9호고산재배적괄의밀도화파기,2010～2011년설치료52 500주/hm2（A1）、60000주/hm2（A2）、67500주/hm2（A3）、75000주/hm2（A4）、82500주/hm2（A5）화90000주/hm2（A6）6개밀도처리이급6월10일（B1）、6월15일（B2）、6월20일（B3）、6월25일（B4）、6월30일（B5）화7월5일（B6）6개파기처리,연구불동밀도화파기처리대석옥9호산량적영향。결과표명：2010년화2011년석옥9호산량균수밀도적가대정선증가후강저추세,분별재A4화A5처리하체도최고,균재A1처리하최저;6개밀도처리적2 a평균산량순서위A5〉A4〉A3〉A6〉A2〉A1,기중,A4여A5처리차이불현저,단량자균겁현저〉기타처리。2010년화2011년석옥9호산량균수파기적추지정축점강저추세;6개파기처리적2 a평균산량순서위B1〉B2〉B3〉B4〉B5〉B6,차불동파기처리적차이균체도료겁현저수평。밀도화파기균대옥미산양산생겁현저영향,재기중남지구석옥9호괄의밀도위75000～82500주/hm2;괄의파기위6월10일,차불만우6월25일,재치구조건윤허적정황하진량조파。
The effects of planting density and sowing date on the yield of new maize variety Shiyu No. 9 were studied from 2010 to 2011. The results showed that with the increasing of planting density, the yield increased firstly then decreased, it reached the highest under the density of 75 000 plants/bin2 and 82 500 plants/hm2, while it was the lowest under the density of 52 500 plants/hm2. The order of the average yield under different densities was As 〉 A4 〉 A3 〉 A6 〉 A2 〉 A1. The average yield under 75 000 plants/hm2 had no significant difference with that under 82 500 plants/hm2, while they were very significantly higher than those under other densities. The yield decreased with the delay of sowing date. The order of the average yield sowed on different dates was Bj 〉 B2 〉 B3 〉 B4 〉 B5 〉 B6. The difference of yield sowed on six dates reached significant level. The planting density and sowing date influenced the yield significantly. The suitable planting density was 75 000 -82 500 plants/hm2 in the south centre of Hebei. The suitable sowing date was June 10. It should be sowed earlier under the suitable conditions of crops for rotation.