The morphology of mature male cones was observed and the impact of climate was *** collecting days of mature pollen at Chun’an County,Zhejiang Province,was during the 3-5-days period from the end of Mach to the begin...
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The morphology of mature male cones was observed and the impact of climate was *** collecting days of mature pollen at Chun’an County,Zhejiang Province,was during the 3-5-days period from the end of Mach to the beginning of April in normal temperature years,which would be 3-5 days later in low temperature years and 3-5 days earlier in high temperature *** male cones at lower elevation blossom 6-8 days earlier than those at the elevation of 120-550 ***,it is practical to prolong reasonably the collecting period of pollen.
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