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近几年蔬菜育苗技术已有很大改进,育苗场所由传统的阳畦育苗普遍向温室育苗方面发展,各地都在推广和试行无土育苗,也有的称为快速育苗或新法育苗,也有的叫做“工厂化育苗”,虽然名称不一样,具体的环节措施也不尽相同,但都是采用不同材料做基质来代替土壤的部分作用。在京津地区及河北省北部目前一般以炉渣做基质育苗,也有用蛭石或草炭做基质的。然而在管理上,尤其浇灌营养液的多少及间隔时间却全凭各地习惯做法,缺乏科学依据,往往造成基质下部积水或养分渗流,影响幼苗生长。本试
In recent years, vegetable nursery technology has been greatly improved nursery sites from the traditional nursery nursery development to the greenhouse nursery in general, all over the promotion and trial of soilless nursery, also known as rapid nursery or new law nursery, and some are called “ Factory nursery seedlings, ”although the name is not the same, the specific steps are not the same, but they are made of different materials to replace the role of soil matrix. In Beijing and Tianjin and Hebei Province, the northern part of the province is now generally used as a substrate for raising seedlings with vermiculite or peat. However, in terms of management, especially how much and how often the nutrient solution is irrigated is based on local practices and lack of scientific evidence, it often results in the seepage of water or nutrients in the lower part of the matrix and affects seedling growth. This test