重金属和油处理剂对水稻根系的影响

Influence of heavy metals and oil treating agent on rice rootsystem

摘要: 试验了Ｎｉ、Ｚｎ、Ｍｎ、Ｓｎ、Ｃｒ和Ｃｕ等６种重金属及油处理剂对水稻根系的影响，结果表明．水中含Ｎｉ０．００７ｍｇ／１、Ｃｕ０．００５ｍｇ／１时，能阻碍根系的伸长；含Ｚｎ０．５ｍｇ／１以上时。不利于根系的伸长；水中含Ｍｎ２０ｍｇ／１，Ｓｎ、Ｃｒ^６+各５ｍｇ／１时，对根系有明显危害；水中含Ｃｒ^２＋＋Ｃｒ^６＋时，当１种离子浓度保持不变，根系的抑制程度随着另１种离子浓度的增加而增大。水中含油处理剂１０００ｍｇ／１时，能抑制水稻发根。

Abstract: The influences of Ni,Zn Mn sn,Cr and Cuand the oil treating agent on rice root systen were tested Itwas found that the growth of rice root system was inhibited at 0.007mg/1 of Ni and 0.005mg/1 of Cu in the water; retardedwith more than 0.5mg/of Zn;and significantIy injuried with 20mg/1 Mn, 5mg/1 Sn and 5mg/1 Cr⁶⁺in the water.WhenCu²⁺coexisted with Cr⁶⁺in the water,and the concentrationof one metal remains stable,the inhibition of rice root systemwas enhanced as the concentration of another metal ion in-creased .The development of the rice was suppressed by 1000mg/1 oil treating agent in the water.