【摘 要】
：
塑料大棚是当前我国冬春蔬菜保护地栽培的主要方式之一,其主要优点是造价低、密封性能好,利于保温;主要缺点是气体交换不良,早晚光照不足。本试验拟意改善大棚内光合环境,探
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塑料大棚是当前我国冬春蔬菜保护地栽培的主要方式之一,其主要优点是造价低、密封性能好,利于保温;主要缺点是气体交换不良,早晚光照不足。本试验拟意改善大棚内光合环境,探讨大棚蔬菜的增产途径,现将试验情况初报如下: 一、试验方法:1986至1987年度分别在商丘市蔬菜研究所及本校进行。试材为黄瓜测定指标为(?)大棚内的光照强度,CO_2浓度,光合强度,以露地相应指标为对照。 CO_2浓度及光合强度采用江苏理化测试中心研制的GH—Ⅲ光合仪,光照强度用北京
Plastic greenhouses is one of the main ways to cultivate winter and spring vegetable reserves in our country. Its main advantages are low cost, good sealing performance and good thermal insulation. The main disadvantage is poor gas exchange and lack of light sooner or later. This experiment intends to improve the photosynthetic environment within the greenhouse to explore ways to increase the yield of greenhouse vegetables, test conditions are reported as follows: First, the test method: from 1986 to 1987 in Shangqiu Vegetable Research Institute and the school. Cucumber cucumber test indicators for the (?) Light intensity within the greenhouse, CO 2 concentration, photosynthetic intensity, the corresponding indicator of the open field as a control. CO_2 concentration and photosynthetic intensity using the Jiangsu Physical and Chemical Testing Center developed GH-Ⅲ photosynthesis, light intensity with Beijing
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