中文摘要：

用新型植物生长调节剂NP-2000原液的3种浓度100、200、300倍液喷施水稻苗期叶片,研究了NP-2000对水稻苗期生长及生理特性的影响.结果表明,此调节剂对水稻株高分蘖数无影响,但可有效提高水稻苗期的净光合速率,低浓度的NP-2000在喷施后12d能有效提高水稻叶片IAA、GA1、Z的含量,对ABA的含量影响不显著.此调节剂对水稻苗期的调控作用值得进一步研究.

英文摘要：

The effects of NP-2000,a new regulator,on the growth and physiological characteristics of rice seedlings were studied by spraying different concentration（100 x,200 x and 300 x） of NP-2000.It showed that NP-2000 had no significant effects on stem length and tiller numbers,but sigrificantly improved photosynthetic rate.IAA,GA1 and Z contents increased when treated with low NP-2000 concentration for 12 days.