论文部分内容阅读
【目的】研究长期不同施肥对双季稻产量演变和稳定性的影响。【方法】以25年定位施肥试验为平台,采用AMMI模型对影响双季稻总产量稳定性的施肥处理、环境和二者互作进行分析。【结果】(1)施肥处理与环境互作(F×E)平方和占方差分析总平方和的9.78%,达到了极显著差异水平(P<0.01),AMMI模型的交互效应主成分(IPCA)前三项累计解释了88.46%的互作平方和,其稳定性参数(Di值)与Shukla变异系数和变异系数的相关系数分别为0.97和0.83,均达到了极显著相关。(2)均衡施化肥可以有效提高双季稻产量和产量稳定性,在等量养分条件下配施有机肥进一步提高了其产量和产量稳定性,其中在产量方面,配施30%、50%和70%有机肥处理较均衡施化肥处理(NPK)分别提高6.15%、3.88%和7.75%;在稳定性方面,分别提高25.91%、59.78%和29.31%。【结论】AMMI模型很好地解释了施肥处理与环境的互作效应,是评价长期施肥条件下双季稻产量稳定性的有效方法。根据分析结果得出,有机无机肥配施是该区域双季稻高产和稳产的最佳施肥措施,其中等比例配施有机无机肥在产量相对较高的条件下(与均衡施化肥处理相比)稳定性最好;30%有机肥配施70%化肥和70%有机肥配施30%化肥两个处理在稳定性相对较好的情况下产量最高、适应性最强。
【Objective】 The objective of this study was to investigate the effects of long-term fertilization on the yield and stability of double cropping rice. 【Method】 Based on the 25-year fertilization experiment, the AMMI model was used to analyze the fertilization treatment, environment and the interaction between the two crops. 【Result】 (1) The sum of squared fertilization and environmental interactions (F × E) accounted for 9.78% of the total variance of variance analysis, reaching a significant level of difference (P <0.01). The principal component of interactive effects of AMMI ) The sum of the first three terms explained 88.46% of the sum of squares of interactions, and the correlation coefficients between the stability parameter (Di value) and the Shukla coefficient of variation and the coefficient of variation were 0.97 and 0.83, respectively, reaching extremely significant correlations. (2) The balanced application of chemical fertilizers can effectively improve the yield and yield stability of double cropping rice. Applying organic fertilizer under the same amount of nutrients to further improve the yield and yield stability, in which the output of 30%, 50% (NPK) increased by 6.15%, 3.88% and 7.75%, respectively, compared with 70% organic manure, and increased by 25.91%, 59.78% and 29.31% in stability. 【Conclusion】 The AMMI model can well explain the interaction effect between fertilization and environment and is an effective method to evaluate the stability of double cropping rice under long-term fertilization. According to the analysis results, it is concluded that organic and inorganic fertilizers are the best fertilization measures for high yield and stable yield of double cropping rice in this area, and the proportion of organic and inorganic fertilizers is relatively high under the condition of relatively high yield ) The best stability; 30% organic fertilizer with 70% fertilizer and 70% organic fertilizer with 30% fertilizer two treatments in the case of relatively good stability, the highest yield, the most adaptable.