摘要
为了寻找来源广、取材方便的烤烟有机育苗营养液,采用双因素三水平的试验设计,研究了营养液N质量浓度分别为50、150、250mg/L的育苗专用肥、沼液和鱼蛋白有机液肥对烟苗生长发育和生理特性的影响。结果表明,各肥源50 mg/L N处理的烟苗生长矮小,株高为3.99～11.34cm,150mg/L N处理的烟苗长势最好,株高为16.95～17.61cm。沼液150mg/L N处理烟苗地上部长势较好,株高为16.95cm,接近常规育苗肥效果,根鲜、干质量分别为0.79、0.07g/株,根系活力为307.36U/(g.h),高于常规育苗肥和鱼蛋白有机液肥处理;鱼蛋白有机液肥150mg/L N处理烟苗株高为17.61cm,但根系活力最弱,仅为163.70U/(g.h),烟苗光合色素含量和净光合速率均低于沼液处理。综合分析,沼液150mg/L N处理的烟苗生长最好,可考虑用于烟草有机育苗。
For organic tobacco production it is very important to find out an organic nutrient solu- tion which confers a widely available and convenient source in floating-seedling system. To deter- mine the effects of fertilizer and nitrogen concentrations on growing development of flue-cured to- bacco seedlings,the experiment was designed with three fertilizers （conventional fertilizer,biogas slurry and fish protein hydro organic fertilizer） and three N concentrations （50,150,250 mg/L）. The result showed that the tobacco seedlings were small and short under the N concentration of 50 mg/L,about 3.99--11.34 cm in height. But when the N concentration increased to 150 mg/L, the tobacco seedlings grew well,with height of 16.95-17.61 cm. The biogas treatment （150 mg/L N） improved the development of tobacco seedlings, conferring an average height of 16.95 cm. Their dry and fresh weights of one root were 0. 07 g and 0.79 g, and the root activity was 307.36 U/（g·h）. Applied by fish protein hydro-organic fertilizer （150 mg/L N） the tobacco seedlings grew well, but the root activity decreased to the lowest, 163.70 U/（g·h）. Interestingly, the photosynthetic pigments content and photosynthetic rate in the treatment of fish protein hydro-organic fertilizerwere lower than those under the biogas slurry treatment. Consequently, the growth and develop- ment of the seedlings under the biogas slurry treatment of 150 mg/L N was best,which could be used in the organic floating-seedling system.
出处
《河南农业科学》
CSCD
北大核心
2013年第1期38-42,共5页
Journal of Henan Agricultural Sciences
基金
中国烟草总公司重点项目(110200902072)
贵州省烟草公司(专卖局)项目(200901)
关键词
有机烟
烟苗
沼液
鱼蛋白有机液肥
生长发育
根系形态
光合特性
organic tobacco
flue-cured tobacco seedlings
biogas slurry
fish protein hydro-or-ganic fertilizer
growing development
root morphology
photosynthetic characteristic
