柴油污水对水稻茎蘖生长及产量的影响

Effect of the Irrigation with Water Polluted by Diesel Oil on Rice Growth

试验表明 ,用柴油污水灌溉水稻引起籽粒产量显著下降的临界浓度在1 0 0 0mg/L左右 ,而 2 0 0 0mg/L以上浓度则引起水稻植株的枯死。高氮水平下的水稻油污危害比低氮水平时轻 ,而低氮水平下

The experiments show that the critical concentration of polluted water which led to marked reduction of rice grain yield was about 1000 mg/L, and the whole rice plant would wither when the concentration of irrigated water polluted by diesel oil was over 2000mg/L. The harm degree of polluted water at high N fertilization level was smaller than at low N fertilization level, and the lower concentration of 50 mg/L polluted water was beneficial to the growth of tiller and grain in rice.