摘要
适宜的土壤环境条件是烟草优质适产的基础,经整理后烟田土壤物理化学性质变差,特别是新整理后的烟田土壤水稳性团聚体含量显著下降的现实.本研究将有机堆肥、膨润土和聚丙烯酰胺(PAM)配施成改良材料,通过室内和大田试验,探讨三者协同作用对新整理烟田土壤结构改良和烤烟生长效应.结果表明,施用改良材料的各处理不同程度地提高了烟叶产值,增加了中上等烟比例和均价.综合经济效益考虑,对于整理烟田土壤结构改良,以有机堆肥9 000kg/hm2、膨润土750kg/hm2和PAM 150kg/hm2三者结合效果最佳.同时施用改良材料能显著提高新整理烟田土壤有机物质和腐殖质含量,显著增加0.25mm以上土壤水稳性团聚体数量,为新整理烟田改良和可持续利用提供了依据.
Suitable soil conditions are the basis for high-quality tobacco production, but the physical and chemical properties of consolidated tobacco soil deteriorate and, especially, the content of its water stable aggregates decreases significantly. In this study, conditioning materials were made of organic compost, betonies and PAM fertilizer, and laboratory and field experiments were conducted to explore their effects on soil structure of a newly consolidated tobacco field and on the growth of tobacco plants on it. The re sults showed that all treatments of application of the soil conditioning materials improved tobacco output in different degrees, and increased the proportion of upper-grade tobacco and its price. Based on a compere hensive consideration of the economic benefits, a combination of organic compost 9 000 kg/hm2 , betonies 750 kg/hm2 and PAM dated tobacco field. In 150 kg/hm2 gave addition, conditio the best effect of soil structure improvement of the newly consoli ning material a and humus contents of the newly consolidated tobacco Pp fie lication significantly increased the organic matter ld and significantly increased its 0. 25 mm water stable aggregates, which provided evidence for the improvement newly consolidated tobacco fields and their sustainable use.
出处
《西南大学学报（自然科学版）》
CAS
CSCD
北大核心
2016年第5期31-36,共6页
Journal of Southwest University(Natural Science Edition)
基金
国家自然基金项目(31101610
31372141)
中国烟草总公司重庆市公司科技项目"新整理烟田快速培肥及土壤微生态恢复与重建研究与示范"(NY20130501070004)
中国烟草总公司重点项目(110201502015)资助
关键词
新整理烟田
改良材料
土壤结构
newly consolidated tobacco field
soil conditioning material
soil structure
