有机污染物对水稻秧苗生长的影响

以水稻品系哈04-34为材料,利用人工气候箱内模拟水稻生长环境,并进行苗期跟踪调查研究,探讨了含有不同种类、不同浓度有机污染物的水灌溉对水稻秧苗生长的影响。结果表明:任意浓度的硝基苯处理对水稻秧苗的生长都产生抑制作用,使水稻株高变矮,叶片数和根数减少,0.153 mg.L-1以上浓度灌溉的水稻在秧苗期死亡,故0.153 mg.L-1浓度为致死剂量;氯苯处理明显抑制水稻秧苗的高度,对叶片数和根数影响不明显;不同浓度萘处理均能降低水稻株高,减少叶片数,但能增加根数量,并且随处理浓度的增大这种变化趋势更明显。

Effect of Organic Contaminations on Seedling Growth of Rice

To explore the effect of different kinds and concentration of organic contaminations on rice seedling growth,rice line Ha04-34 was tested by potted trail in climate cabinate.The research results indicated that nitrobenzene of anyconcentration restrained growth of rice seedling,and the effects were restraining plant height,reducing leaves and roots numbers.The seedling died while concentration of nitrobenzene above 0.153 mg·L-1.The effect of chlorobenzene on seedling growth were restraining plant height,but effect of which to leaves and roots numbers was little.The effect of naphthaline of different concentration on seedling growth were restraining plant height,reducing leaves numbers,but could increasing roots numbers,and The tendency was evident along with concentration increasing.