对年桐(对岁桐、两年桐)春季播种育苗与外界气候条件有密切关系。为找出气象条件对对年桐的播种育苗及进入始花期的影响,笔者于1985年春进行分期播种,现将观察得的材料整理如下,供今后深入研究及生产上的参考。一、播种育苗情况和观测方法:于本局地面观测场南面的苗圃内,用一 On the annual Tong (on the annual Tong, two years Tong) sowing seedlings in spring and the outer climatic conditions are closely related. To find out the meteorological conditions on the annual sowing nursery seedlings and the beginning of the flowering period, the author sown in the spring of 1985, the observed materials are summarized below, for future in-depth study and production of reference. I. Sowing nursery situation and observation method: In our nursery south of the ground observation field, use one