大连地区一些生产单位当前塑料大棚黄瓜生产存在的主要问题有秧苗不壮、棚内湿度过大、瓜蔓徒长、病害较重、成瓜率低等针对这些问题提出以下几项改进大棚黄瓜生产的技术措施。1.改进苗期的温度、光照条件要想获得大棚黄瓜质优、高产,必须培育壮苗。而培育壮苗的关键,是要严格 Some production units in Dalian present the main problems in the production of plastic greenhouse cucumber seedlings are not strong, greenhouse humidity is too large, Guadan long, heavier diseases, into a low rate of these problems raised the following questions to improve the production of greenhouse cucumbers Technical measures 1. To improve the seedling temperature, light conditions To get greenhouses cucumber quality, high yield, you must cultivate strong seedlings. The key to nurturing seedlings is to be strict