【摘要】 平阴玫瑰花芽的生理分化一般在月平均气温稳定在2℃时开始,在平阴县正常年份在2月中上旬。形态分化过程要求月平均气温稳定在7℃以上。平阴玫瑰从萌动到末花期,大约需在85~96d的时间,一般4月下旬至5月上旬为始花期;5月下旬至6月上旬为末花期,历时25~30d左右;盛花期5d左右,要求日平均20℃左右,通常开花量随气温升高而增多。平阴玫瑰在整个生育期中,要求光照充足;植株4年生时产花量达到高峰,5年后开始下降。更多还原

【Abstract】 The physiological flower bud differentiation begins when monthly mean temperature is about 2℃(currently,It is about ten days of February in Pingyin).It’s morpho-differentiation require monthly mean temperature above 7℃.From burgeoning to end-florescence,it is for 85-96 days.Currently,first-florescence is at the last ten-day of April and the first ten-day of May;end-florescence is at the last ten-day of May and the first-ten day of June and the all will last a period of time for 25-30 days.The full-florescence is for some 5 days and require daily mean temperature for 20℃,and commonly,the amount of inflorescence increases together with air temperature adding.During the growth stages of Pingyin rose,illumination must be abundant.The output of inflorescence is at the top when it is at 4-year-old and it will decrease after 5-year-old.更多还原