期刊论文

Effects of planting density and nitrogen application on microclimate and photosynthetic characteristics of tobacco plants in tobacco field

中文

湖南农业大学学报(自然科学版)

1007-1032

2019

45

3

258-263

10.13331/j.cnki.jhau.2019.03.007

湖南中烟工业有限责任公司科技项目（YC13005）；

本校为第一机构

探讨了烤烟种植密度(19500、18000、16500株/hm~2)与施氮水平(105.0、127.5kg/hm~2)对烟田小气候以及烟株光合作用的影响。结果表明:烟株叶面温度较田间垄间温度平均高2.50℃,二者呈正相关关系(r=0.800),受种植密度影响较大;施氮量为127.5kg/hm~2时,种植密度每增加1500株/hm~2,烟株下、中、上部垄间温度分别降低1.35、1.65和1.95℃,叶面温度分别下降1.80、1.55和1.40℃;种植密度与施氮量对垄间相对湿度的影响存在负的显著交互效应,效应值为–0.538;种植密度影响烟株中下部有效光合辐射,高种植密度下增施氮肥,导致中下部叶片有效光合辐射分别减少39.46%和56.98%;种植密度与施氮量显著影响烟株光合...

The effects of planting density (19 500,18 000 and 16 500 plants/hm~2) and nitrogen application level (105.0 and 127.5 kg/hm~2) on microclimate of tobacco field and photosynthesis were studied.Results showed that leaf surface temperature was 2.50 ℃ higher than field ridge temperature on average,which were greatly influenced by planting density and there was a positive correlation between them (r=0.800).When nitrogen application amount was 127.5 kg/hm~2,and with each increase of planting density by 1 500 plants/hm~2,temperature at lower,middle ...