摘要
【目的】对南雄市不同香型烟区土壤养分特征进行研究,以期为南雄市烟草种植区的科学施肥和产量品质的提升提供依据。【方法】通过对南雄市2015、2016年测土配方施肥项目获取的土壤养分数据进行抽样分析,运用层次分析法研究不同类型烟区的土壤养分丰缺状况及特征。【结果】不同烟区的pH、有机质和碱解氮差异显著,而土壤有效磷和速效钾差异不显著,有机质含量平原黄烟区高于半山清香型和平原浓香型烟区,碱解氮含量平原黄烟区低于半山清香型和平原浓香型烟区,不同类型烟区的土壤有效磷和土壤速效钾含量差异不大;平原浓香型烟区样点中94%有机质含量和76%碱解氮含量处于适宜水平,半山清香型烟区样点中96%有机质含量和68%碱解氮含量处于适宜水平,平原黄烟区样点中72%有机质含量和28%碱解氮含量处于适宜水平,而不同烟区的有效磷和速效钾含量低于临界水平比例较大;平原浓香型和半山清香型烟区的土壤养分状况属于缺乏状态,平原黄烟区的土壤养分状况在适宜水平。【结论】南雄市不同类型烟区土壤养分状况存在一定的差异性,不同类型烟区要注重科学精确施肥,并在此基础上合理进行生态适宜区划分。
【Objective】In this paper, the soil nutrient characteristics of different types of tobacco growing areas (TGAs) in Nanxiong City were studied to provide a basis for the scientific fertilization and the improvement of yields and quality in TGAs in Nanxiong.【Method】Through sampling analysis of soil nutrient data obtained from the Soil Testing and Fertilizer Recommendation Project in Nanxiong City in 2015 and 2016, the soil nutrient abundance and deficiency status and characteristics of different types of TGAs were studied by using analytic hierarchy process (AHP).【Result】 There were significant differences in pH, organic matter (OM) and alkali- hydrolyzable nitrogen (AN) of different TGAs , and no significant differences in available phosphorus and rapidly available potassium in soil. The content of organic matter (OM) in plain-based yellow TGAs was higher than that in hillside-based slightly flavored and plain-based highly flavored TGAs. The content of alkali-hydrolyzable nitrogen in plain-based yellow TGAs was lower than that in hillside-based slightly flavored and plain-based highly flavored TGAs. There were no significant differences in available phosphorus and rapidly available potassium in soil in different types of TGAs. The content of OM and AN were appropriate at 94% and 76% respectively in sampling sites in plain-based highly flavored TGAs, 96% and 68% respectively in hillside-based slightly flavored TGAs, 72% and 28% respectively in plain-based yellow TGAs. In different TGAs, the content of available phosphorus and rapidly available potassium was largely lower than the critical level. The soil nutrients were deficient in plain-based highly flavored and hillsidebased slightly flavored TGAs and appropriate in plain-based yellow TGAs.【Conclusion】There are differences in the soil nutrient status in different type TGAs in Nanxiong City. In different TGAs, attention should be paid to scientific and accurate fertilization, and on this basis, reasonable division of ecological suitable areas should be made.
作者
高琳
林昌华
陈晓远
王卫
GAO Lin;LIN Changhua;CHEN Xiaoyuan;WANG Wei(Yingdong College of Agricultural Science and Engineering, Shaoguan University/Yuebei Soil and Land Research Center, Shaoguan University, Shaoguan 512005, China)
出处
《广东农业科学》
CAS
2019年第1期50-57,共8页
Guangdong Agricultural Sciences
基金
韶关市科技计划项目(韶科[2015]72号)
