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长期不同施肥处理对苹果产量、品质及土壤肥力的影响

赵佐平1,2,同延安1**,刘芬1,王小英1   

  1. (1西北农林科技大学资源环境学院, 陕西杨凌 712100; 2陕西理工学院, 陕西汉中 723001)
  • 出版日期:2013-11-18 发布日期:2013-11-18

Effects of different long-term fertilization patterns on Fuji apple yield, quality, and soil fertility on Weibei Dryland, Shaanxi Province of Northwest China.

ZHAO Zuo-ping1,2, TONG Yan-an1, LIU Fen1, WANG Xiao-ying1   

  1. (1College of Natural Resources and Environment, Northwest A&F University, Yangling 712100, Shaanxi, China; 2Shaanxi University of Technology, Hanzhong 723001, Shaanxi, China)
  • Online:2013-11-18 Published:2013-11-18

摘要:

通过连续7年(2003—2010年)的田间定位试验,研究了不同施肥处理\[不施肥对照,CK;不施N肥只施PK肥,PK;不施P肥只施NK肥,NK;不施K肥只施NP肥,NP;单施NPK化肥,NPK;单施有机肥(猪粪),M;化肥有机肥配施(化肥有机肥氮各占一半),NPKM\]对渭北旱塬富士苹果产量、品质及果园土壤养分含量变化的影响.结果表明: 施肥可以提高苹果产量,连续7年不同施肥处理苹果平均产量较对照提高14.4%~63.8%,各处理苹果年平均产量顺序为:NPKM>NPK≥M>NP≥NK>PK>CK.NPKM、M、NPK处理随着试验时间的推移,果实可溶性糖、维生素C、可溶性固形物含量呈上升趋势,NPKM、M处理不同年际间波动相对较小;NPKM处理糖酸比5年较对照提高了30.9%,维生素C含量提高了17.5%.长期合理施肥有利于提高土壤有机质,NPKM、M处理0~20 cm土层有机质含量提高幅度最大,分别提高了28.8%和29.3%. NPK、NPKM、M处理土壤各层速效氮、有效磷、速效钾含量较试验前均有显著提高,NPK处理0~20 cm、20~40 cm和40~60 cm土层速效氮含量分别提高了22.7%、37.3%和53.4%.与NPK处理相比,NPKM处理的土壤速效磷含量提高了18.7%,且不同处理土壤速效磷含量上层显著大于下层.

 

Abstract: A 7-year (2003-2010) located field experiment was conducted to evaluate the effects of different longterm fertilization patterns on the Fuji apple yield, quality, and soil fertility on the Weibei Dryland, Shaanxi Province of Northwest China. Seven treatments were installed, i.e., no fertilization (CK), inorganic P and K fertilization (PK), inorganic N and K fertilization (NK), inorganic N and P fertilization (NP), inorganic N, P, and K fertilization (NPK), swine manure (M), and half inorganic N, P, and K combined with half swine manure (NPKM). Each treatment had three replications. Fertilization increased the apple yield. The average yield in the 7 years under fertilization was increased by 14.4%-63.8%, as compared to the CK. The average yield decreased in the order of NPKM>NPK≥M>NP≥NK>PK>CK. In treatments NPKM, M, and NPK, the fruit sugar/acid (S:A) ratio, vitamin C, soluble solid, and hardness tended to be increased with time, with a smaller yearly fluctuation in treatments NPKM and M. In treatment NPKM, the S:A ratio and vitamin C increased by 30.9% and 17.5%, respectively after five years, as compared to the CK. Long-term rational fertilization increased the soil organic matter (SOC) content in 0-20 cm layer, with the largest increment in treatments NPKM and M (28.8% and 29.3%, respectively). The soil available N, P, and K contents in all layers in treatments NPK, NPKM, and M increased significantly, and the soil available N content in 0-20, 20-40, and 40-60 cm layers in treatment NPK was increased by 22.7%, 37.3%, and 53.4%, respectively. As compared to treatment NPK, the soil available P content in treatment NPKM was increased by 18.7%. In all fertilization treatments, the soil available P content was significantly higher in upper layer than in lower layer.