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FEECTOF DIFFERENT N FERTILIZERS ON SOIL ENZYME ACTIVITY ANDN NUTRITION DISTRIDUTION ACROSS SOYBEAN RHIZOSPHERE(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2003年03期
Page:
213-217
Research Field:
Publishing date:

Info

Title:
FEECTOF DIFFERENT N FERTILIZERS ON SOIL ENZYME ACTIVITY ANDN NUTRITION DISTRIDUTION ACROSS SOYBEAN RHIZOSPHERE
Author(s):
Wang Guanghua 　Jin Jian 　Pan Xiangw en 　Zhou Keqin 　Liu Xiaobing
Northeast Institute of Geography and Agricultural Ecology , Chinese Academy of Sciences , Harbin , 150040
Keywords:
N fertilizer ; Soybean ; Soil enzyme ; NO-3 -N ; NH+4 -N
PACS:
S 565.1
DOI:
10.11861/j.issn.1000-9841.2003.03.0213
Abstract:
Nitrogen is the most important nut rient fo r plant g row th .The effect s of sodium nit rate , ammoniumsulfate , urea , and two slow -releasing urea fertilizers(LP -40 , LP -70)on the NO-3 -N , NH+4 -N , and soilenzymes activity dist ribution across soybean (Glycine max L .Merrill , Variety of Heinong 35)rhizospherew ere in veslig ated in the research.The results showed that ex cepted nitrous reductase activity w as low er in therhizosphere of LP -70 t reatment , all soil enzymes including nit rate reductase , nitrous reductase and urease activityw as higher in soy bean rhizosphere than that in non -rhizosphere .NO-3 -N was the main source of ni trogen ,w hich was depleted in the rhizosphere in the t reatments of ammonium sulfate , urea , LP -40 and LP -70 , butg reatly accumulated in the sodium nitrate t reatment .NH+4 -N concentration increased slightly in the rhizospherein the ammonium sulfate treatment , and decreased in the rhizosphere w hen suppling with the o ther fourkinds of N fertilizers .From this experiment we concluded that the dif ferent N fertilizers had great effect on soilenzyme activi ty and N nutri tion distribution across soybean rhizosphere .

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Last Update: 2016-12-31