长期不同施肥策略下茶园土壤肥力及茶叶产量的响应OA
The responses of soil fertility and tea yield in tea plantations under long-term different fertilization strate-gies
为评估长期常规施肥与配方施肥策略下茶园土壤肥力和茶叶产量的响应,本研究基于2013-2024年在浙江丽水市松阳县象溪镇石鼓村(SG)和松阳县新乡镇上安村(SA)设立的长期定位试验,通过对土壤pH、有机质、全氮、有效磷、速效钾和缓效钾等关键肥力指标的动态监测,并结合产量相关性分析,探明两种长期施肥模式下茶园土壤肥力的演变特征及茶叶产量的变化趋势.结果表明:(1)长期配方施肥显著提升了土壤有机质、全氮和缓效钾含量,土壤肥力综合水平总体提升;常规施肥下有效磷和速效钾含量显著升高,但土壤酸化加剧.(2)SG和SA监测点常规施肥区茶叶平均产量分别比配方施肥区高出4.9％和7.1％,而配方施肥区产量可持续性指数(SYI)分别为0.83和0.71,显著优于常规处理,且年际变异系数低,表明其具有更高的稳定性和可持续性.(3)主成分分析显示,土壤有机质、全氮、有效磷、缓效钾与茶叶产量呈显著正相关.实施配方施肥能够更好地促进养分的中长期平衡与持续供给,从而提升茶园土壤肥力的稳定性与生产效益.本研究结果可为优化浙南山区茶园施肥策略、实现茶园生态系统的可持续管理提供科学依据.
To evaluate the effects of long-term conventional fertilization and formulated fertilization strategies on soil fertility and tea yield of tea plantations,we conducted field experiments in Shigu Village(SG)of Xiangxi Town and Shang'an Village(SA)of Xinxiang Town in Songyang County,Lishui City,Zhejiang Province during 2013-2024.Soil properties were monitored,including soil pH,organic matter,total nitrogen,available phosphorus,and readily and slowly available potassium.The correlations between soil properties and tea yield were analyzed.Soil fertility and tea yield under formulated fertilization were compared with those under conventional fertilization.The results showed that:(1)long-term formulated fertilization significantly improved soil fertility by increasing the contents of soil organic matter,total nitrogen,and slowly available potassium,while conventional fertilization increased the contents of available phosphorus and readily available potassium but significantly intensified soil acidification.(2)Conventional fertilization resulted in slightly higher tea yield than formulated fertilization by 4.9％and 7.1％in SG and SA,respectively.However,the sustainable yield index(SYI)of formulated fertilization was 0.83 and 0.71 in SG and SA,respectively,which were significantly higher than that of conventional fertilization.In addition,the low interannual coefficient of variation(CV)indicated that formulated fertilization led to higher stability and sustain-ability in agricultural production.(3)Principal component analysis revealed significant positive correlations be-tween tea yield and soil organic matter,total nitrogen,available phosphorus,and slowly available potassium.The implementation of formulated fertilization better promotes medium-to long-term nutrient balance and sustained sup-ply,thereby enhancing the stability of soil fertility and production efficiency in tea plantations.These findings pro-vide a scientific basis for optimizing fertilization strategies and achieving sustainable management of tea plantation ecosystems in the mountainous regions of southern Zhejiang.
王宇菲;吴林土;叶春福;杨静;袁国印;程陈;丁枫华
丽水学院,浙江丽水 323000松阳县农业农村局,浙江松阳 323400松阳县农业农村局,浙江松阳 323400丽水学院,浙江丽水 323000丽水学院,浙江丽水 323000丽水学院,浙江丽水 323000丽水学院,浙江丽水 323000
茶园施肥策略土壤肥力茶叶产量长期定位试验
tea plantationfertilization strategysoil fertilitytea yieldlong-term positioning experiment
《生态学杂志》 2026 (3)
733-741,9
丽水市公益性技术应用研究计划(2024GYX14)资助.
评论