摘要
通过磷锌不同用量的室内培养试验和温室盆栽试验研究表明，大量施用磷肥降低了土壤锌的有效性，尤其是在缺锌的土壤中。白浆土锌分级测定表明，土壤中锌主要以矿物态存在，施用锌肥增加了交换态锌和氧化锰结合态锌含量；但同时施用磷肥，无定形铁结合态锌和品形铁结合态锌则有一定的增加，降低了土壤锌的有效性。施用磷肥也增加了锌在植株根部的积累，降低了植株地上部锌供应。磷锌交互作用不仅发生在土壤中，也存在于植株体内。在大量施用磷肥的同时，必须增施锌肥。
Thermostatic incubation and greenhouse experiments were carried out to study the effectS of appliedphosphorus fertilder on zinc availability in albic soil. There were increases of exchangeable Zn and MnO2 bound-Znwith the application of Zn fertilizer. But the amountS of amorphous Fe bound-Zn and crystalline Fe bound-Zn were increase when phosphorus and zinc fertilizers were applied together. The P application increased the zinc adsorptionand fixation on Fe and Al oxide, resulting in the decrease of Zn availability; meanwhile it also cave rise to the zinc accumulstion in the plsnt rootS and induce zinc deficiency. The P and Zn interaction occured both in the soil and in theplants.
出处
《南京农业大学学报》
CAS
CSCD
北大核心
1995年第2期69-73,共5页
Journal of Nanjing Agricultural University
关键词
白浆土
磷肥
锌肥
交互作用
albic soil
phosphorus fertilizers
Zn fertilizers
interaction
