CAJ | 학술논문

设置5个水平的种植密度，研究了不同种植密度对甜玉米品种‘夏王’产量和主要农艺性状的影响。结果表明：在不同的种植密度下，甜玉米‘夏王’的产量和果穗性状都有明显的差异；玉米产量随着种植密度的增加而增加，增加到一定幅度后又随着密度的增加而下降；随着种植密度的增大，植株果穗长度、果穗粗度、行粒数、正品果穗率和单穗重量均逐渐下降；综合性状表现，‘夏王’在上海地区春播适宜的播种密度为4．50万—4．95万株？hm2，从鲜穗商品性及种植效益考虑，最佳种植密度为4．50万株？hm2。
설치5개수평적충식밀도，연구료불동충식밀도대첨옥미품충‘하왕’산량화주요농예성상적영향。결과표명：재불동적충식밀도하，첨옥미‘하왕’적산량화과수성상도유명현적차이；옥미산량수착충식밀도적증가이증가，증가도일정폭도후우수착밀도적증가이하강；수착충식밀도적증대，식주과수장도、과수조도、행립수、정품과수솔화단수중량균축점하강；종합성상표현，‘하왕’재상해지구춘파괄의적파충밀도위4．50만—4．95만주？hm2，종선수상품성급충식효익고필，최가충식밀도위4．50만주？hm2。
The field experiments with sweet corn cultivar ‘Xiawang’were carried out at 5 different planting densities to study the fresh ear yield and main agronomic characters of the cultivar as influenced by planting den-sity.The results showed that under different planting densities the cultivar’s fresh ear yield and characters had obvious differences;The yield increased with the planting density increasing and then decreased when the plant-ing density was beyond a certain extent;The ear length and diameter,ear weight,grains per row,and quality ear rate decreased gradually with the planting density increasing;In terms of the comprehensive agronomic charac-ters,a suitable spring seeding density for the cultivar in Shanghai area was 45 000—49 500 plants?hm2 ,and con-sidering the fresh ear marketability and economic benefit the optimum planting density was 45 000 plants?hm2 .