首页|Optimization of fertilizer performances in long-term garlic cropping soils

Optimization of fertilizer performances in long-term garlic cropping soils

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
Continuous cropping is a common pattern of modern agriculture that takes regional advantages for crop yield profits.Along the progress of mono-cropping continuously supported by intensive fertilizer inputs,such a cropping pattern often undergoes serious problems with low fertilizer use efficiencies and unsustainable crop production.In this study,we dealt with a＞25-year continuous garlic cropping system as an example for a problem-solving investigation.These garlic cropping soils underwent problems characterized by loss of soil organic matter,dramatic retention of NH4+-N,and excess accumulation of phosphate and potash chemicals.Through hydroponic simulations,we revealed that the presence of NH4+-N inhibited the root uptake of NO3--N and K by 68％and 88％,respectively.Despite the traditionally emphasized importance of K,we observed the negative effect of high K on the growth of garlic roots.Further field experiments demonstrated that P and K applications can be reduced by 60％and 50％,respectively,without loss of yield.We thus developed a high-performance fertilization strategy by integrating a recomposed NPK fertilizer formulation to reduce unnecessary P and K inputs,a supplementary application of long-lasting C of woody peat to compensate for the soil C loss,and a foliar K approach to strengthen the stomatal function improvement with K.This strategy allowed a 15％increase of garlic yield and a seasonal soil C profit of ca.1.8 Mg ha-1 even at ca.30％lower fertilizer cost.This study would be helpful in managing garlic fertilization and developing compound fertilizers,with broader significance for other long-term cropping soils.

fertilization strategyfertilizer inputfield validationhydroponic simulationoptimized fertilizationsoil nutrient balanceyield profit

Tianqi WEI、Hongmei ZHOU、Huayang HONG、Yanyun REN、Qin LIU、Yanhua SU

展开 >

Institute of Soil Science,Chinese Academy of Sciences,Nanjing 210008(China)

University of Chinese Academy of Sciences,Beijing 100049(China)

Jining Academy of Agricultural Sciences,Jining 272100(China)

College of Forestry,Nanjing Forestry University,Nanjing 210037(China)

University of Chinese Academy of Sciences,Nanjing,Nanjing 211135(China)

展开 >

14th Five-Year Plan Innovation Program of the Institute of Soil Science,Chinese Academy of Sciences

ISSASIP2201

2024

10.1016/j.pedsph.2023.04.001

土壤圈(英文版)
中国土壤学会,中科院南京土壤研究所和土壤与农业可持续发展国家重点实验室

土壤圈(英文版)

CSTPCD
影响因子：0.477
ISSN：1002-0160
年,卷(期)：2024.34(3)