不同栽培方式竹笋亚硝酸盐残留研究

Nitrite Residues in Bamboo Shoots under Different Cultivations

对雷竹秋季覆盖、冬季覆盖和普通栽培以及毛竹林大量施肥和基本不施肥等不同栽培方式的竹笋亚硝酸盐残留量进行分析研究。结果表明,雷竹笋亚硝酸盐的残留量从高到低排列为冬季覆盖笋>普通栽培笋>秋季覆盖笋;毛竹林中低产林的鞭笋和冬笋的亚硝酸盐残留量都比高产林要多;土壤中的氮含量和土壤温度可能影响竹笋亚硝酸盐的残留量。

This paper analyzed nitrite residues in bamboo shoots （Phyllostachys violascens） under different cultivations including winter mulching, autumn mulching and not mulching, and nitrite residues in shoots （Ph. edulis） with high fertilization level and no fertilization. The results indicated that nitrite residues in Ph. violascens shoots were ordered by winter mulching, not mulching and autumn mulching. Nitrite residues in rhizome shoots and winter bamboo shoot of low yield Ph. edulis forest were higher than those of high-yield Ph. edulis forest. The nitrite residues in bamboo shoots were probably related to temperature and soil nitrogen content alike.