摘要
在豫西半干旱地区洛宁采用密度和施氮量2因素裂区设计,研究了不同种植密度和氮用量对豫西地区烟叶光合有效辐射、光合特性和产量质量的影响。结果表明:(1)随着氮肥和密度的增加,烟株能截获更多的光合有效辐射。随着施氮量的增加烤烟净光合速率增加。高密度和高施肥量会导致烟叶气孔导度变小。(2)从烟叶产量上看,在相同的密度下,烟叶的产量随着施肥量的增加而增加,产量以D3N4处理最高,达3 162 kg/hm2;种植密度对烟叶产量的影响较大,在相同施肥水平下以D3密度平均产量最高,但D3与D2密度除N4施肥水平外产量差异不显著。从产值上分析,在相同施肥水平下以D2密度产值较高,D2N2和D2N4产值分别达到42 148.5元/hm2和42 454.5元/hm2,上等烟比例分别为32.2%和32.8%,烟叶均价以D2N2处理最高,达14.9元/kg。(3)综合分析,在豫西烟区,种植密度以D2密度(16 500株/hm2),氮肥施用量以N2水平(60 kg/hm2)为宜。
The effects of different planting density and nitrogen rate on thetic characteristics, yield and quality were studied through a field experiment eas of western Henan. The results showed that ： （1） with increase of nitrogen photosynthetic active radiation, photosyn with the split block design in semiarid ar rate and planting density, flue cured to bacco had an increase trend in intercepting photosynthetic active radiation. The net photosynthetic rate of tobacco leaves increased with increase of nitrogen level. High planting density and high nitrogen rate could decrease stomata conductivi ty. （2） Under the same planting density, with increase of nitrogen rate tobacco output increased and the D3N4 treatment got the highest output of 3 162 kg/hm2. Planting density had significant influence on tobacco yield, and the treatment of D3 density had the highest yield under the same nitrogen rate application. The difference of tobacco output was not signif icant between D2 and D3 density except the nitrogen rate at N4 level. Under the same nitrogen rate application, the D2 density treatment got the highest tobacco output. Under D2N2 and D2N4 treatments, the output reached 42 148.5 yuan/ hm2 and 42 454.5 yuan/hmz, respectively, and the proportion of superior tobacco leaves reached 32.2 % and 32.8 %, respectively. The D2N2 treatment got the highest average price （14.9 yuan/kg）. （3） Compared comprehensively, plant ing density at D2 （16 500 plants/hm2） and the application level of nitrogen rate at N2 （60 kg/hm2） were suitable in to baccogrowing region of westem Henan
出处
《干旱地区农业研究》
CSCD
北大核心
2012年第5期66-70,共5页
Agricultural Research in the Arid Areas
基金
河南省烟草专卖局科技项目(HYKJ201108)
国家烟草专卖局特色优质烟叶开发重大专项
洛阳市烟草公司科技项目
关键词
烟草
种植密度
氮用量
光合特性
豫西
Tobacco
planting density
nitrogen rate
photosynthetic characteristics
west of He＇ nan region
