XU Xiaodi,CAO Li,CHEN Yanzhu,et al.Changes of Leaf Nutrients and Soil Properties of Pyrus bretschneideri Rehd.‘Pingguoli’ Under Reduced Fertilization[J].Northern Horticulture,2022,(19):29-35.[doi:10.11937/bfyy.20220820]
减量施肥下苹果梨叶片养分及土壤性状的变化
- Title:
- Changes of Leaf Nutrients and Soil Properties of Pyrus bretschneideri Rehd.‘Pingguoli’ Under Reduced Fertilization
- 关键词:
- 减量施肥; 苹果梨; 叶片养分; 土壤性状; Pearson相关性
- Keywords:
- reduced fertilization; Pyrus bretschneideri Rehd.‘Pingguoli’; leaf nutrients; soil traits; Pearson correlation
- 文献标志码:
- A
- 摘要:
- 以苹果梨为试材，设置了CK（不施肥）、CF1（1 kg·株-1）、CF2（3 kg·株-1）、CF3（5 kg·株-1）4个处理，采用Pearson相关性分析方法，研究了减量施肥对苹果梨叶片养分和土壤性状变化规律的影响，以期为延边地区苹果梨合理施肥提供参考依据。结果表明：在合理范围内减量施肥可以提高叶片叶绿素含量，且养分含量仍处于正常范围内；苹果梨叶片中P含量与N、K含量呈极显著正相关，与Ca、Mg含量呈显著负相关，N含量与K含量呈显著正相关，与Ca含量呈极显著负相关，Ca含量与K含量呈显著负相关，与Mg含量呈极显著正相关。减量施肥能明显降低化肥投入，有效改善果园土壤性质，提高土壤酶活性，有利于改善土壤微环境，且对树体生长无不利影响。综合分析，以CF1效果最佳，可在实际生产中推广。
- Abstract:
- ‘Pingguoli’ was used as the test material,and four treatments were set,CK (no fertilization),CF1 (1 kg·plant-1),CF2 (3 kg·plant-1),and CF3 (5 kg·plant-1).The Pearson correlation analysis method was used，the effects of reduced fertilization on leaf nutrients and soil properties of ‘Pingguoli’ were studied,in order to provide reference for rational fertilization of ‘Pingguoli’ in Yanbian area.The results showed that reduced fertilization within a reasonable range could increase the chlorophyll content of leaves,and the nutrient content was still in the normal range;the P content in ‘Pingguoli’ leaves was significantly positively correlated with the N and K contents,and significantly negatively correlated with the Ca and Mg contents.There was a significant positive correlation between N content and K content,a very significant negative correlation with Ca content,a significant negative correlation between Ca content and K content,and a very significant positive correlation with Mg content.Reduced fertilization could significantly reduce the input of chemical fertilizers,effectively improve the soil properties of the orchard,increase the activity of soil enzymes,which was conducive to improving the soil microenvironment,and had no adverse effect on the growth of trees.Comprehensive analysis showed that CF1 had the best effect and could be promoted in actual production.
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备注/Memo
第一作者简介：徐小迪（1998-），女，硕士研究生，研究方向为果树栽培与生理。E-mail：3099859723@qq.com.责任作者：李雄（1968-），男，博士，副研究员，现主要从事果树栽培与生理等研究工作。E-mail：leewch89@163.com.基金项目：吉林省科学技术厅资助项目（20200402071NC）；延边大学校企合作资助项目（[2019]2号）。收稿日期：2022-03-07