韭菜叶片生长动态和分蘖、抽薹特性

对 3个休眠韭菜品种和 9个不休眠韭菜品种叶片生长动态、分蘖和抽薹特性的研究表明 ,在全年不收割条件下 ,韭菜单株年生长叶片 41.2 2～ 47.0 3片 ,叶片平均叶龄 39.33～ 44 .87d。新叶生长高峰在 5～ 8月 ,叶片平均间隔 5 .39～ 8.0 3d ,叶片平均日生长量 1.6 6～ 1.84cm ,5～ 8月是全年单株生长最高的时期 ,株高 41.30～5 0 .2 3cm。韭菜单株年分蘖 4～ 5个 ,全年有两次分蘖高峰 ,第 1次在 5～ 6月 ,第 2次在 9～ 10月 ,但以第 1次分蘖为主。韭菜不休眠品种抽薹期长而分散 ,为 37.0 0～ 6 5 .33d ,休眠品种抽薹期短而集中 ,为 15 .0 0～ 30 .6 7d ,休眠品种全年生长期 2 82～ 2 92d ,不休眠品种全年生长期为 32 0～ 32 3d。

Growth Trend of Blade and Characteristic of Tillering and Bolting in Chinese Chives (Allium tuberosum Rottl. Ex Spreng.)

The experiment on growth trend of Chinese chives blade and its characteristic of tillering and bolting was carried out, using three dormancy and nine non-dormancy varieties. The results showed that without cutting in a year, a single Chinese chives plant grew 41.22 to 47.03 blades, average age of blade was 39.33 to 44.87 days. The growth peak of new blades occurred from May to August. The growth interval between two blades was 5.39-8.03 days. The daily growth of blade is about 1.66-1.84 cm, the average height of a Chinese chives is about 41.30-50.23 cm. A Chinese chives tillered 4 to 5 times a year. There were two peaks of tillering. The first one appeared in May or June, the second in September or October. The period of bolting of the non-dormancy variety of leek was longer than that of the dormancy one. The former was about 37.00-65.33 days. The latter only last 15.00-30.67 days. The growth of dormancy variety occupied 280-292 days a year and non-dormancy variety 320-323 days.