基于Meta分析中国老芒麦种子产量和产量组分对施肥的响应
刘耀博 , 裴渌 , 刘琛琢 , 李晓霞 , 邹博坤
草业学报 ›› 2025, Vol. 34 ›› Issue (06) : 85 -98.
基于Meta分析中国老芒麦种子产量和产量组分对施肥的响应
A meta-analysis of fertilizer response of seed yield and seed yield components in Elymus sibiricus
探究不同条件下老芒麦种子产量和产量组分对施肥的响应,为我国乡土草种老芒麦种子生产提供理论基础。以中国为研究区域,以不施肥老芒麦为对照,通过整合分析已发表的相关田间试验数据,采用整合分析法(Meta-analysis)定量研究老芒麦种子产量和产量组分对施肥的响应及与种植年限、种植行距和区域性因素的关系。结果表明,施肥可显著提高老芒麦的种子产量(P<0.001),对其产量组分有积极影响,以单施N肥和N、P、K肥配施的整体增产效果较明显;施肥对老龄以及种植3~4年老芒麦的增产效果更好,施肥可以明显延长老芒麦的生产年限;施肥对30 cm行距种植的老芒麦增产效果最好;在不同气候、土壤条件的生长区域,如年平均降水量400~800 mm的半湿润区,年均温-0.3至8 ℃区域,常年耕种沙壤土或土壤养分不均衡的土壤类型区域,施肥对老芒麦种子产量都有较好的增产效果。
The objective of this study was to investigate the fertilizer response of seed yield and seed yield components of Elymus sibiricus under different conditions, in order to provide theoretical guidelines for seed production of E. sibiricus, a native grass species in China. Published research conducted in China was analysed, with unfertilized E. sibiricus serving as the control. By analysing the data from relevant field experiments, the response of seed yield and yield components of E. sibiricus to fertilizer application was quantitatively investigated, along with the effect of stand age, row spacing and regional factors. The results showed that fertilization significantly increased the seed yield of E. sibiricus (P<0.001), and had a positive effect on its yield components. The most obvious effects were an overall yield increase from a single application of nitrogen fertilizer and from combined application of N, phosphorus and potassium fertilizers. The effect of fertilizer application on yield of E. sibiricus was better in stands planted for 3-4 years and on E. sibiricus planted with a row spacing of 30 cm, and fertilizer obviously prolonged the production life of E. sibiricus stands. With respect to different climatic and soil conditions, fertilizer application had a better effect on the seed yield of E. sibiricus in semi-humid areas with an average annual precipitation of 400-800 mm, in areas with an average annual temperature of -0.3 to 8 °C, in areas with sandy loam soil, or where soil nutrient imbalances occur through year-round cultivation.
种子产量 / 产量组分 / 种植年限 / 种植行距 / 施肥类型 / 区域性因素
seed yield / yield components / planting year / planting row spacing / fertilizer type / regional factors
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重要生态修复草种质资源挖掘与创新利用(CAFYBB2022XA002)
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