摘要
[目的]为重庆市优质烟叶的生产和烤烟生产中合理施用硼肥提供科学依据。[方法]对重庆市植烟区土壤硼素含量特征进行分析研究。[结果]重庆市植烟区土壤有效硼含量较低,平均为0.39 mg/kg,变幅为0.07～1.99 mg/kg,其中≤0.25 mg/kg严重缺硼的土壤样本数占32.35%,>0.5 mg/kg缺硼临界值的样本数只占24.42%。从重庆市不同植烟区县土壤有效硼含量来看,以武隆、彭水和南川植烟土壤有效硼含量较低,分别为0.21、0.24、0.29 mg/kg;以涪陵、城口、奉节、巫山、开县和丰都植烟土壤有效硼含量相对较高,分别为0.75、0.70、0.68、0.62、0.59、0.50 mg/kg;其他区县在0.31～0.39 mg/kg范围内。不同类型植烟土壤有效硼含量差异较大,其有效硼平均含量高低依次为:石灰土>紫色土>黄壤≈黄棕壤>水稻土。各类土壤有效硼含量≤0.5 mg/kg缺硼临界值的土壤样本数分别占50.00%、40.00%、78.35%、75.00%和100.00%。[结论]重庆市沿长江两岸区县的土壤有效硼含量较高,而原来黔江区所辖的几个县及相邻的区县土壤有效硼含量较低。
[ Objective ] The scientific basis of the reasonable application of boron fertilizer in flue-cured tobacco production in Cbongqing city was provided. [ Method] The characteristics of the content of boron in the soil planted with tobacco in Chongqing were studied. [ Results] The content of effective boron in the tobacco growing land in Chongqing was low soil, with an average of 0.39mg/kg and ranged from 0.07 - 1.99 mg/kg. The number of soil samples with the boron-containing of ≤ 0.25 mg/kg accounted for 32.35%, which was a serious deficiency; 〉0. 5 mg/kg, the threshold of deficiency boron, only 24.42%. In Chongqing, the county with low content of available boron in tobacco growing land soil was Wulong, Pengshui and Nanchuan, which were 0.21,0.24 and 0.29mg/kg, respectively; relatively high content of available boron in tobacco growing land soil was Fuling, Chengkou, Fengjie, Wushan, Kaixian and Fengdu, which was 0.75, 0. 70, 0. 68, 0. 62,0.59 and 0.50 mg/kg, respectively; and available boron in tobacco growing land soil in other counties was ranged from 0. 31 -0.39 mg/kg. There was quite different of content of available boron in the different type of tobacco soil and the order of average level of effective boron was as follows ： lime soil 〉 purple soil 〉 yellow ≈yellow-brown soil 〉 paddy soil. The number of different types of soil samples with the boron-containing of ≤ 0.5mg/kg, the threshold of deficiency boron, accounted for 50.00% , 40.00% , 78.35% , 75.00% and 100.00%, respectively. [ Conclusion ] There was relatively high level of available boron in soil along the the Yangtze River in Chongqing and low level of available boron in the soil of several counties of the former Qianjiang district and its adjacent counties
出处
《安徽农业科学》
CAS
北大核心
2009年第28期13747-13749,共3页
Journal of Anhui Agricultural Sciences
基金
重庆工学院博士科研启动基金(2007Q51)
重庆市烟叶公司专项基金项目(CQT2006010)资助
关键词
烤烟
硼
土壤
重庆市
Flue-cured tobacco
Boron
Soil
Chongqing city
