说明嫁接后第3-4年，是种子园进入盛产的关键时期，也是实施人工控制授粉的有利时期。
These results showed that the period of 3rd-4th year after grafting is key since the orchard was entering the age of full production. It is also important for practice of control pollination.
养蜂人负责计划、组织、控制、协调和管理蜂房，来生产蜂蜜、蜂王花粉、蜂蜡和蜂王浆，培养蜂王和授粉农作物。
Plans, organises, controls, coordinates and operates apiaries to produce honey, queen bee pollen, beeswax and royal jelly, breed queen bees and pollinate crops.
基因改造作物是否会授粉给周遭的植物，使抗虫基因流入野地，创造出不受控制的超级野草？
Will GM crops pollinate nearby plants, casting their genes into the wild to create super weeds that grow unchecked?
我们所说的有淡水、粮食作物、授粉、纤维、以及控制水土流失等。
We are talking about freshwater, crops, pollination, fibre and erosion regulation.
广玉兰的雌性先熟是通过主动控制花药开裂时间，降低雌雄功能干扰，有效减少自花授粉。
Protogyny in M. grandiflora lies in a mechanism that determines the anther dehiscence stage, thus reducing self-pollination and interference between pollen and stigmas.
在一般大田环境中，控制玉米果穗的授粉情况，研究果穗在套 袋和自然授粉时可溶性糖和淀粉在花丝和穗轴中的变化情况。
A study was conducted under general field condition to control pollination so as to investigate the dynamic of soluble sugar and starch in the cob and silk of two varieties corn.
在一般大田环境中，控制玉米果穗的授粉情况，研究果穗在套 袋和自然授粉时可溶性糖和淀粉在花丝和穗轴中的变化情况。
A study was conducted under general field condition to control pollination so as to investigate the dynamic of soluble sugar and starch in the cob and silk of two varieties corn.
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