四、育苗技术无土立体栽培由于其生育环境不同于土壤栽培。为保证秧苗成活率和高产高效,所使用的秧苗也必须是无土的脱毒苗。1.品种选择以叶菜类为主,包括生菜(日本莴苣、美国大速生菜、香港玻璃脆)、芹菜、番茄、紫背天葵等,以及部分小型果菜,如草莓等。 Fourth, nurturing technology soilless cultivation Because of its fertility environment is different from soil cultivation. In order to ensure the survival rate of seedlings and high yield and efficiency, the seedlings used must also be soil-free virus-free seedlings. 1. Selection of varieties mainly leafy vegetables, including lettuce (Japanese lettuce, American Speedy Lettuce, Hong Kong glass crisp), celery, tomatoes, purple back sunflower, and some small fruit and vegetables, such as strawberries.