Abstract: Effects of meteorological factors on yield and quality of green asparagus (Asparagus Officinalis L.) were studied in 2006 in the West Liaohe Plain, Inner Mongolia. The results showed that the total yield and qualified asparagus spears were extremely significantly positively (P<0.01) correlated to the accumulated temperature in the period of the day on spear harvest (DSH) and two days before DSH. The yield and the number of unqualified asparagus spears were significantly positive correlated to the wind velocity during the DSH and one day before DSH (P<0.01). The wind velocity is one of reasons that loose top spears and twisted spears formed. The yield and the number of unqualified spears were extremely significantly positive correlated to the daily minimum and maximum temperature, but not significant to the relative humidity, daily range of temperature. Building windbreak or small shed mulching with plastic film during the harvest season was an effective way to improve the yield and quality of green asparagus spears in the West Liaohe Plain.

Key words: Meteorological factor, Meteorological factor, Green asparagus (Asparagus Officinalis L.), Yield, Quality, West Liaohe Plain