Effect of site microclimate on flowering of Lycoris radiata
In order to understand the relationship between flowering and environmental factors,this paper used microclimate monitoring and phenology observation to investigate the flowering phenology of understory and open field with Lycoris radiata.The results showed that:(1)The highest air temperature,the highest soil temperature,the average temperature difference and the humidity difference of the understory cultivation site were all lower than that of the open-field cultivation site.(2)The flowering period of L.radiata was 15～20 d,among which,the flowering period of understory cultivation field was early and relatively concentrated(16 d),and the flowering period of open field cultivation field is late and slightly longer(19 d).The flowering period of the understory cultivation site was about 60 d earlier than that of the open cultivation site,and the emergence stage,the beginning flowering stage and the full flowering period were 52 d,61 d and 61 d earlier respectively.(3)Principal component analysis showed that the temperature(the highest temperature,soil temperature and average temperature difference)had the greatest influence on the flowering of L.radiata,followed by air humidity(monthly average air humidity and humidity difference).The flowering phenology of L.radiata was closely related to environmental factors(temperature and humidity).In the actual production,appropriate cooling and humidification measures in summer can be considered to promote early flowering and improve flowering uniformity.
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