江西农业大学学报
江西農業大學學報
강서농업대학학보
ACTA AGRICULTURAE UNIVERSITATIS JIANGXIENSIS
2010年
1期
1-8
,共8页
胡启锋%曾勇军%石庆华%潘晓华%李素佳%易引辉
鬍啟鋒%曾勇軍%石慶華%潘曉華%李素佳%易引輝
호계봉%증용군%석경화%반효화%리소가%역인휘
双季早稻%根系%产量%产量构成%相关性
雙季早稻%根繫%產量%產量構成%相關性
쌍계조도%근계%산량%산량구성%상관성
early-season rice%roots%yield%yield components%correlation
以淦鑫203为材料,通过秧龄、密度和施氮量处理研究其根系生长特征与产量及产量构成的关系.结果表明:淦鑫203产量与根系总干重、根系总体积、根系伤流量以及5~15cm根系干重和体积均呈极显著或显著的正相关关系; 10~15cm,20~30cm内围根系(r≤5cm)干重和体积以及10~15cm外围(r≥5cm)根系干重和体积均与产量呈显著正相关关系;0~5cm内围根系干重与千粒重呈显著正相关;0~10cm外围根系干重和根系体积与每穗粒数呈显著正相关.研究结果还表明,影响淦鑫203产量的主要因素是每穗粒数,其与齐穗期、乳熟期的根系伤流量也呈极显著正相关关系.
以淦鑫203為材料,通過秧齡、密度和施氮量處理研究其根繫生長特徵與產量及產量構成的關繫.結果錶明:淦鑫203產量與根繫總榦重、根繫總體積、根繫傷流量以及5~15cm根繫榦重和體積均呈極顯著或顯著的正相關關繫; 10~15cm,20~30cm內圍根繫(r≤5cm)榦重和體積以及10~15cm外圍(r≥5cm)根繫榦重和體積均與產量呈顯著正相關關繫;0~5cm內圍根繫榦重與韆粒重呈顯著正相關;0~10cm外圍根繫榦重和根繫體積與每穗粒數呈顯著正相關.研究結果還錶明,影響淦鑫203產量的主要因素是每穗粒數,其與齊穗期、乳熟期的根繫傷流量也呈極顯著正相關關繫.
이감흠203위재료,통과앙령、밀도화시담량처리연구기근계생장특정여산량급산량구성적관계.결과표명:감흠203산량여근계총간중、근계총체적、근계상류량이급5~15cm근계간중화체적균정겁현저혹현저적정상관관계; 10~15cm,20~30cm내위근계(r≤5cm)간중화체적이급10~15cm외위(r≥5cm)근계간중화체적균여산량정현저정상관관계;0~5cm내위근계간중여천립중정현저정상관;0~10cm외위근계간중화근계체적여매수립수정현저정상관.연구결과환표명,영향감흠203산량적주요인소시매수립수,기여제수기、유숙기적근계상류량야정겁현저정상관관계.
Ganxin 203 was used to study the correlation between root growth characteristics and yield and yield components by treatment with different seedling ages,transplanting densities and nitrogen applications.The results showed that yield was significantly or very significantly positively correlated with weight,volume and bleeding intensity of the total root and the roots weight,volume of the soil layer 5-15 cm.Significant or very significant positive correlations between yields and roots weights,volumes of the layer 10-15 cm and 20-30 cm of inner circle(r≤5 cm) and the layer 10-15 cm of outer circle(r≥5 cm) were also observed.1000-grain weight was significantly positively correlated with root weight of the layer 0-5 cm of inner circle.Spikelet number per panicle was significantly positively correlated with root weight and volume of the layer 0-10 cm of outer circle.Besides,the results indicated that the main factor affecting grain yield was spikelet number per panicle,and it was significantly positively correlated with root bleeding intensity in full heading and milk stage.