甜菊的叶片中含有10一14%的总甜菊甙,是甜菊生产的主要产品。叶片收获是甜菊生产中的重要环节,如搞不好,轻则影响产量和质量,重则使叶片失去利用价值,现将甜菊收获技术介绍如下。一、收获时期和次数甜菊在苗期,叶片中的甜菊甙含量很低,随着营养体的生长,含甙量逐渐增高,到现蕾期达到高峰,盛花期之后又趋下降。在生产中,应以现营初期到开花初期,作为收获的适期。我国幅员广大,具体适收时期和收获次数,因各地气候条件和栽培技术不同,而有较大差异。在华南亚热带的气候条件下,每年可收获3—5次。在华北温 Stevia leaf contains 10 to 14% of the total stevioside, stevia is the main product. Leaf harvest is an important part of the production of stevia, such as engage in poor, ranging from the impact of yield and quality, while leaves the value of the loss of the use of leaves, stevia harvest now introduced as follows. First, the harvest time and the number of stevia At the seedling stage, the stevioside content in leaves is very low, with the growth of vegetative body, the amount of containing glycosides gradually increased to the peak budding stage, and then declining after full bloom. In production, should be early to early flowering, as the harvest of the appropriate period. The vastness of our country, the specific appropriate time and the number of harvest, due to different climatic conditions and cultivation techniques, and there is a big difference. In South China subtropical climate conditions, harvest 3-5 times a year. In North China warm