摘要
银杏最佳人工授粉期表现为全树有１／２～２／３的雌授粉孔分泌约为孔径２倍液珠，利用银杏花期的主要气象因子活动积温（Ｘ１）、日照时数（Ｘ２）、降水量（Ｘ３），预测预报人工授粉最佳期（７）的理论方程为ｙ＝２０．１９４７＋０．００３０６３２Ｘ１＋０．０２４７４０８Ｘ２＋０．００２８６４９４Ｘ３，多年大面积应用于生产实践后，银杏产量以每年８．２３％的递增率上升。
The artific
ial pollination must be taken in the product ion of Ginkgo biloba for its dioecism,Based On the
experiment and observat ion for many years,the optimum per iod of artific ial pollinat ion when
one second to two third of the female flowers over a tree were secret ing a liquid bead from the
pollination pore,Which was abent two times the size of the ovule pore,was determined.It was
obta ined from active accumulated temperature(X1),sunshine hours(x2)and alnount of precipitat
ion(x3)which were the main meteorological tactors dffecting the blossom that the multiple
regression equation predicting the optimum artificial pollination date was
y=18..1947+0.0030632x1 + 0·0247408x2+0.0028649x3 for Gindgo biloba. Since using it in
production and practice in great area,the seed product has been increasing at an ascending
ratio of 8.23 percent every year .
出处
《江苏林业科技》
1994年第4期7-10,共4页
Journal of Jiangsu Forestry Science & Technology
关键词
银杏
积温
日照时数
降水量
人工授粉最佳期
Ginkgo biloba
Accumlated tenlpeiature
Sunshine
hours
Rainfall
The optiimun date for the artificial dollination
