학술논문
密度对燕山丘陵区春玉米茎秆性状与产量的影响 / Effects of Density on Stalk Traits and Yield of Spring Maize in Hilly Region of Yanshan Mountains
Document Type
Academic Journal
Author
边丽梅; 董喆; 郑伟; 张丽妍; 张昊; 郝春雷; 左妍妍; 薛新伟; 慈艳华; 杜江洪; 孟繁盛; BIAN Limei; DONG Zhe; ZHENG Wei; ZHANG Liyan; ZHANG Hao; HAO Chunlei; ZUO Yanyan; XUE Xinwei; CI Yanhua; DU Jianghong; MENG Fansheng
Source
陕西农业科学 / Shaanxi Journal of Agricultural Sciences. 69(12):25-29
Subject
Language
Chinese
ISSN
0488-5368
Abstract
采用随机区组试验设计,以郑单958、粒收1号、中农222、中农239和先玉335为试验材料,设6.0万、7.5万和9.0万株/hm23个密度处理,分析春玉米茎秆性状、产量及产量构成因素随密度变化的趋势,明确不同玉米品种适宜的种植密度.结果表明,株高、穗位高随种植密度增加而增加,茎粗、茎秆穿刺强度和压折强度均呈减小趋势,但密度对粒收1号和中农222的茎秆穿刺强度影响不显著.先玉335在密度为7.5万株/hm2时最高,密度继续增加后产量减少.郑单958、粒收1号、中农222、中农239 4个品种随密度增加收获穗数和产量均增加,千粒重和穗粒数均减少,密度为9.0万株/hm2时最高.中农239、中农222、粒收1号这3个玉米品种在9.0万株/hm2时产量达到最高,分别为10594 kg/hm2、12 066 kg/hm2 和 11 449 kg/hm2,郑单 958 在 7.5 万和 9.0 万株/hm2 时产量变化不大,差异不显著,而倒伏率显著增加,说明高密度会增加郑单958的倒伏,综合考虑,郑单958的适宜密度为7.5万株/hm2.
A randomized block design was used in this experiment.Zhengdan 958,Lishou 1,Zhongnong 222,Zhongnong 239 and Xianyu 335 were used as experimental materials.Three density treatments(60 000,75 000 and 90 000 plants/hm2)were set up.The study aimed to analyze the trends in stem traits,yield and yield components of spring maize in response to varying planting densitie for determining the optimal planting density for different maize varieties.The results showed that the plant height and ear height increased with the increase of planting den-sity,while the stem diameter,stem puncture strength and stem bending strength all decreased,but the density had no significant effect on the stem puncture strength of Lishou 1 and Zhongnong 222.Xianyu 335 reached the highest density when the density was 75 000 plants/hm2,and the yield decreased after the density continued to increase.Zhengdan 958,Lishou 1,Zhongnong 222 and Zhongnong 239 increased with the increase of density,the number of harvested panicles and yield increased,the 1000-grain weight and the number of grains per panicle decreased with increasing density.The peak values for these variables were observed at a density of 90 000 plants/hm2.The yield of Zhongnong 239,Zhongnong 222 and Lishou 1 reached the highest at 90 000 plants/hm2,which were 10 594 kg/hm2,12 066 kg/hm2 and 11 449 kg/hm2.The yield of Zhengdan 958 at 75 000 plants/hm2 and 90 000 plants/hm2 did not change significantly.However,the lodging rate increased significantly,indicating that high density would increase lodging of Zhengdan 958.The optimal density of Zhengdan 958 was 75 000 plants/hm2.
A randomized block design was used in this experiment.Zhengdan 958,Lishou 1,Zhongnong 222,Zhongnong 239 and Xianyu 335 were used as experimental materials.Three density treatments(60 000,75 000 and 90 000 plants/hm2)were set up.The study aimed to analyze the trends in stem traits,yield and yield components of spring maize in response to varying planting densitie for determining the optimal planting density for different maize varieties.The results showed that the plant height and ear height increased with the increase of planting den-sity,while the stem diameter,stem puncture strength and stem bending strength all decreased,but the density had no significant effect on the stem puncture strength of Lishou 1 and Zhongnong 222.Xianyu 335 reached the highest density when the density was 75 000 plants/hm2,and the yield decreased after the density continued to increase.Zhengdan 958,Lishou 1,Zhongnong 222 and Zhongnong 239 increased with the increase of density,the number of harvested panicles and yield increased,the 1000-grain weight and the number of grains per panicle decreased with increasing density.The peak values for these variables were observed at a density of 90 000 plants/hm2.The yield of Zhongnong 239,Zhongnong 222 and Lishou 1 reached the highest at 90 000 plants/hm2,which were 10 594 kg/hm2,12 066 kg/hm2 and 11 449 kg/hm2.The yield of Zhengdan 958 at 75 000 plants/hm2 and 90 000 plants/hm2 did not change significantly.However,the lodging rate increased significantly,indicating that high density would increase lodging of Zhengdan 958.The optimal density of Zhengdan 958 was 75 000 plants/hm2.