Studies on Changes of Field - Vegetable Ecosystem under Long-term FixedFertilizer Experiment( Ⅳ) Changes of Field - Vegetable Ecosystem

ACTA HORTICULTURAE SINICA ›› 2004, Vol. 31 ›› Issue (5): 598-602.

• 研究论文 • Previous Articles Next Articles

Studies on Changes of Field - Vegetable Ecosystem under Long-term FixedFertilizer Experiment( Ⅳ) Changes of Field - Vegetable Ecosystem

Ge Xiaoguang;Gao Hui ;Zhang Enping;Wang Xiaoxue; Zhang Xin

( College of Horticulture , Shengyang Agricultural University , Shenyang 110161 , China)

Received:2003-11-10 Revised:2004-02-23 Online:2004-10-25 Published:2004-10-25

Abstract

Abstract: Apparent bacauce of input and output of NPKobtained f rom protected tomato in 2002 coincided with the real nut rient increase or loss between the starting point under protected condition and practical nut rient content 1415 years later. The former showed the t rend of nut rient system changes , while the latter was the actual status of nut rient increase or loss. The nut rient increase or loss was mainly determined by the application of organic manure and nut rient supply. Soil fertilities and yields and other parameters of five typical t reatment sreflected the actual changes of each system , and the ANK treatment turned out to be the best system in our long-term fertilization trial. The application of organic manure , combination of chemical fertilizer and soil-testing fertilization method were discussed on the base of summarizing the long-term of fertilization trial.

Key words: Vegetable, Long-term fixed fertilization, Apparent nut rient profit or loss, Vicious circle system, Soil-testing fertilization

CLC Number:

Ge Xiaoguang;Gao Hui;Zhang Enping;Wang Xiaoxue;Zhang Xin. Studies on Changes of Field - Vegetable Ecosystem under Long-term FixedFertilizer Experiment( Ⅳ) Changes of Field - Vegetable Ecosystem[J]. ACTA HORTICULTURAE SINICA, 2004, 31(5): 598-602.

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Studies on Changes of Field - Vegetable Ecosystem under Long-term FixedFertilizer Experiment( Ⅳ) Changes of Field - Vegetable Ecosystem

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