Effects of Sulfur and Nitrogen on Decreasing Nitrate Accumulation in Chinese Chive

doi:10.3969/j.issn.1000-7091.2013.03.031

Abstract

Abstract: With Chinese chive as an experimental material， four treatment factors including S ( 4g/m² ) and nitrogen intensity ( 0，12， 24， 36 g/m² ) were designed to study nitrate reduction and assimilation of Chinese chive in the experiment． The results showed that as the concentration of nitrogen rises， the nitrate content and the activity of nitrate reductase increased，while the activity of glutamic-oxaloacetic-transaminase (GOT) and glutamate-pyruvatetransaminase(GPT)， the content of free amino acids and soluble protein， the dry content rate in Chinese chive increased at first and then descended． Sulphur can reduce nitrate accumulation and improve the activity of NR，GOT and GPT in Chinese chive under different nitrogen concentration，especially for 24 g/m² of nitrogen． The increase amplitudes of NR，GOT and GPT activity ， the content of free amino acids and soluble protein were 21.23%， 20.15%，17.74%，22.79%，25.27% respectively． In conclusion，S and suitable concentration of nitrogen improved nitrate reduction and assimilation，which，meanwhile，brought transaminations into play vigorously，and promoted turning NO ^3-into free amino acid and dissolvable protein

Key words: Sulfur, Chinese chive, Nitrate accumulation, Nitrate reduction and assimilation

CLC Number:

S143
S633

Li Xiaofeng, Li Linyan, Xie Xin, Xue Zhanjun, Wang Junling, Gao Zhikui. Effects of Sulfur and Nitrogen on Decreasing Nitrate Accumulation in Chinese Chive[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2013, 28(3): 175-178. doi: 10.3969/j.issn.1000-7091.2013.03.031.

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http://www.hbnxb.net/EN/Y2013/V28/I3/175

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