【作者】 韦成才； 张立新； 高梅； 阮志； 陈富彩； 穆耀辉； 王平平；

【机构】 陕西省烟草研究所； 西北农林科技大学生命科学学院； 陕西省商洛市烟草公司；

【摘要】 以秦烟96为材料,通过田间试验研究有机物料对烤烟土壤容重、光合特性及农艺性状的影响。结果表明,与单施化肥相比,施用有机物料各处理土壤容重显著减小,烟叶光合特性在生育中后期显著增加,在生育前期无显著差异。随施用有机物料量的增加,土壤容重表现出先降后升的趋势。烤烟光合特性则呈现先升后降的趋势,且以T3(600 kg/亩)最大。说明施用适宜的有机物料量能够改善植烟土壤物理特性,进而改善烟叶氮、钾营养,有利于光合作用,从而促进烤烟生长发育。更多还原

【Abstract】 By mean of Qinyan 96 as materials,a field experiment was conducted to study the effect of organic fertilizer application on photosynthetic characteristics,contents of nitrogen and potassium in tobacco leaves,agronomic characters of flue-cured tobacco in Luonan.The results showed that,comparing with applying chemical fertilizer,applying organic materials decreased soil bulk density,but increased the leaf photosynthetic characteristics at growth late stage of tobacco significantly,but no significant differences in growth prophase.With increasing application rate of organic materials,the soil bulk density showed an increasing trend after a decrease.Photosynthetic characteristics of flue cured tobacco showed an initially increase but decreasing subsequently trend,and maximum soil moisture was recorded in T3(9000 kg/hm-2).These results suggested that optimal organic materials rate application could improve soil physical properties,and improve nitrogen,potassium nutrition of tobacco leaves,and its content level to be beneficial for photosynthesis resulting in promote the growth and development of flue-cured tobacco.更多还原