Morren immediately began experimenting with hand pollination.
莫伦立即开始尝试人工授粉。
However, hand pollination can raise the rate greatly to 28. 0% .
可授期内人工异株授粉，结籽率可提高到28.0％；
Methods Putting forward four measures of flower thinning, hand pollination, girdling and application of foliage fertilize.
方法采用疏花、人工授粉、环割、喷施叶面肥四种措施对化橘红进行提高坐果率的试验。
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