摘要
１９９２年和１９９３年对黄波罗的开花结实习性以及人工授粉的适宜时期进行了研究。结果表明，天然授粉状态下，每个柱头的花粉粒数为０～１４０个。单株的平均授粉率为５２％～９７％，授粉数在５个以下的柱头相当多。无论是单株还是林分内，雄花期长于雌花期，但花粉的发芽率低（１７％～４１％）。为了提高种子的产量和质量，有必要在采种林分内进行人工授粉。雌花的可授期约１０ｄ．最适宜的授粉期为开花后３～４ｄ内，开花后２ｄ内授粉可提高着果率３０％～４０％。
We had researched the flowering habit and optimum artifical pollination of P.a-.murense between 1992 and 1993. The results showed that the number of pollenof each stig-ma was 0～140,average pollination rate of single tree was 52%～97%,the stigmas of lessthan five pollens were numorous under open pollination. Male flower time is longer than thatof female, but the rate of pollen germination is low(17%～41.In order to increase theyield and quality of seed we should take artifical pollination in the stand. Generally,receptiveperiod of stigma is about 10 days. The optimum pollination date is within 3～4 days afterflowering. The rate of fruit-bearing can be increased by 30%～40%in first two days afterflowering if we can artifical pollination.
关键词
黄波罗
授粉
人工授粉
开花结实习性
Phelldendron amurense Rupr.
receptive period
pollination
