大气污染物烟尘对农作物环境的影响研究

Study on influence of atmosphere infectant soot on crop

模拟试验研究烟尘对大白菜品质及产量的影响结果表明 ,烟尘对大白菜生物学性状、生理功能、产量与品质均有不同程度的影响 ,差异显著与差异极显著临界降尘量分别为 4 5 7t/km2 ·月和 6 5 7t/km2 ·月 ,对应大白菜减产幅度分别为 16 6 %和 30 0 % ,可溶性糖含量分别降低 16 7%和 31 0 % ,粗蛋白质含量分别降低 15 0 %和15 9%。

The harm symptom and harm degree to Chinese cabbage were studied in the soot simulating test. The results show that the Chinese cabbage has changed in biology characters, physiological function, output and quality by the infl-uence of soot of different quantities. The critical soot quantity of distinct difference and bally distinct difference are 45 7 t/km 2·mon . and 65 7t/km 2·mon., their ranges of reduction output are 16 6% and 30 0%. The influence of soot on quality of the Chinese cabbage is distinct too. The contents of solubility sugar are decreased by 16.7% and 31.0%, and the contents of coarse protein are decreased by 15.0% and 15.9%, respectively.