论文部分内容阅读
1978年冬,我们从北京地区早春培育果类蔬菜幼苗的实际出发,分析了国内外蔬菜育苗技术发展的动态,根据北京地区的气候特点,确定采取以肥上为基质,在塑料大棚内用电热增加床土温度并用控温仪控制所需温度来培育果类蔬菜的成苗,以寻求一套更能适合我国农业现有设备、资金条件的育
In the winter of 1978, based on the actual situation of nursery vegetables in Beijing in early spring, we analyzed the dynamic development of vegetable nursery technology at home and abroad. According to the climate characteristics of Beijing, we decided to take the fertilizer as substrate, Increase soil temperature and temperature control instrument with the required temperature to cultivate fruit seedlings of vegetables in order to find a more suitable for our existing agricultural equipment, financial conditions of fertility