论文部分内容阅读
我所于1980年开始引进试种,1981年又扩大试种,在温室和大田对其特征特性进行了观察。并对其繁殖方法和就地留种开展了一些研究工作。现将试验结果简结如下:一、生育情况及形态特征甜菊在20～25℃的温度条件下,播后7～8天出苗。第一对真叶小并紧贴地面,第三对真叶出现时开始拔高,但增长速度很慢。第六对真叶时株高7～10厘米,之后,生长速度加快。苗期打尖时分枝发育快,一般单株分枝数为10～26个;没打尖的6月中旬开始出现分枝,生长速度较慢。6～7月生长速度较快,7月底株高达到80～100厘米,成熟时株高为1.1～1.3米。在金县地区自然光照下,出苗至现蕾需150天左右,现蕾至开花15～20天,花
In 1980, I started to introduce test plants. In 1981, I expanded my plantings and observed their characteristics in greenhouses and fields. And carried out some research work on its breeding methods and on-the-spot breeding. The test results are summarized as follows: First, the fertility and morphological characteristics of Stevia at 20 ~ 25 ℃ temperature conditions, 7-8 days after sowing seedlings. The first pair is really small and close to the ground, and the third is true when it appears, but grows slowly. The sixth pair of true leaves height of 7 to 10 cm, after growing faster. Seedling spikes when the branches develop fast, the general number of branches per plant is 10 to 26; did not hit the tip of the middle of June began to appear branches, the growth rate is slow. From June to July, the growth rate is fast, and the plant height reaches 80-100 cm at the end of July. The plant height at maturity is 1.1-1.3 m. In the natural light of Jinxian area, emergence to budding takes about 150 days, budding to flowering 15 to 20 days, flowers