研究了光照、温度、营养 (N,P)对平原水网水体藻类生长的影响 .结果表明 :在 10 0 0～ 5 0 0 0 lx光强范围内 ,藻类的生长数量随光强的增加而呈对数关系增加 ,4 0 0 0 lx是最适宜的培养光照 .在 15～30℃区间内 ,藻类的生长数量也随着温度升高而增加 ,30℃是较适宜的温度 .且温度的影响大于光照 .水中 T- P在 0 .1～ 0 .75 mg/ L范围内 ,随 T- P浓度的提高 ,藻类数量呈对数关系增加 ,而水中 T- N浓度的变化对藻类生长的影响不是很明显 .当水中 T- P>0 .5 mg/ L、T- N>1.0 mg/ L时 ,就能满足藻类大量增殖的需要 ,其中磷对藻类的影响大于氮 The effects of light, temperature and nutrient (N, P) on algae growth in plain water network were studied.The results showed that the number of algae increased with the increase of light intensity in the range of light intensity of 10 000 ~ 500 000 lx The logarithm relationship increased, and the optimum culture light was 40 000 lx. The number of algae increased with increasing temperature from 30 ℃ to 30 ℃, and the optimum temperature was 30 ℃ The effect was greater than that of light.Under the range of 0.1-175 mg / L of T-P in water, the number of algae increased logarithmically with the increase of T-P concentration, while the change of T-N concentration in water had no significant effect on algae growth The effect is not obvious when T-P> 0 .5 mg / L and T-N> 1.0 mg / L in water, which can meet the needs of large-scale algae proliferation. Phosphorus has more influence on algae than nitrogen