华南农业大学学报2018，Vol.39Issue(2)：62-69,8.DOI:10.7671/j.issn.1001-411X.2018.02.010
不同种植模式对雷州半岛玄武岩母质砖红壤氮磷钾养分状况的影响
Effects of different tillage modes on the status of nitrogen, phosphorus and potassium in Leizhou Peninsula latosol from basalt
摘要
Abstract
[Objective]To investigate the effects of different tillage modes on soil fertility properties of Leizhou Peninsula latosol from basalt.[Method]Taking the latosol from basalt in Leizhou Peninsula of China as test object, the variability of soil fertility properties were studied under eight tillage modes. The relationships among numerous fertility variables, integrated soil fertility, and key limiting factors were evaluated by principal component analysis (PCA).[Result]The effects of tillage modes on soil pH, organic matter, total nitrogen (N), available N, phosphorus (P), potassiumin (K), and slowly available K contents were significant (P<0.001). The results of PCA indicated that the differences in integrated soil fertility under eight tillage modes were significant (P<0.0001), which was closely related to the field management. The integrated fertility of banana, vegetable, and paddy-paddy rotation fields were higher, in which that of banana field was the highest, followed by that of vegetable and paddy-paddy rotation fields. The soil organic matter, total N, available N, P, K, and slowly available K of banana field were 2.55, 2.44, 3.50, 2.30, 15.36 and 7.73 times respectively higher than those of cassava field. The limiting factor of fertility enhancement of banana field was the low soil pH, which was 0.89 lower than cassava field. The low organic matter and available P contents were limiting factors of fertility enhancement of banana, and paddy-paddy rotation fields, respectively. The paddy-sweet potato rotation, peanut-paddy rotation, and peanut-soybean rotation fields showed medium integrated fertility, while that of cassava and sweet potato fields were relatively low. The deficiencies of organic matter and N were the main limiting factors of their low integrated soil fertility.[Conclusion]Increasing application of organic fertilizer, reasonable combination of organic and inorganic fertilizers, and regulation of soil pH are key factors to further improve the integrated soil fertility of cultivation land.关键词
砖红壤/种植模式/士壤肥力/施肥管理/养分/主成分分析Key words
latosol/tillage mode/soil fertility/fertilization management/soil nutrient/principal component analysis分类
农业科技引用本文复制引用
李进,段婷婷,高宇,邓凯,梁燕秋,邓卓楠,钟来元,蔺中,郑超..不同种植模式对雷州半岛玄武岩母质砖红壤氮磷钾养分状况的影响[J].华南农业大学学报,2018,39(2):62-69,8.基金项目
国家自然科学基金(41371316) （41371316）
农业部公益性行业(农业)科研专项(A13174) （农业）
广东省自然科学基金(2017A030310662) （2017A030310662）
吴川市2015年度测土配方施肥项目(B16413) （B16413）
广东海洋大学科研启动费资助项目(E15038) （E15038）
广东海洋大学大学生创新创业训练计划(CXXL2017028) （CXXL2017028）
广东海洋大学"海之帆"起航计划(qhjh2017zr16) （qhjh2017zr16）
