摘要
核桃低产的主要原因是落花落果严重,为了提高核桃座果率,实现核桃高产稳产、低耗高效的目标,采取人工辅助授粉的方法,对4-20a生的核桃树进行人工辅助授粉。通过及时采集花粉、指形管2-5℃保存花粉、控制最佳授粉时间、选择适当的授粉方式等措施,可有效提高核桃座果率5.0%-28.3%。两次授粉可比一次授粉提高座果率7%左右。
Low yield of walnut is mainly due to flower and fruit dropping. In order to improve percent- age of fertile fruit and achieve stable high yield and high efficiency on walnut cultivation, artificial supplementary pollination was used on 4-20 years walnut trees. Percentage of fertile fruit of walnut was increased by 5.0%-28.3% through such measures as gathering pollen in time, saving pollen in thimble tube under 2-5℃, controlling best pollination time and selecting suitable pollination method. Compared to pollinating once only, twice pollinating can increase percentage of fertile fruit of walnut by 7 %.
出处
《陕西林业科技》
2015年第6期36-38,共3页
Shaanxi Forest Science and Technology
关键词
核桃
座果率
人工辅助授粉
Walnut
percentage of fertile fruit of walnut
artificial supplementary pollination
