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本文主要探讨了番茄、黄瓜的电热线无土育苗效果。试验结果表明:在冬春温室内地温较低(1517℃)的条件下,电热线具有明显的增温效果,并能自控,与温室内气温的相关系数r=0.4267,无明显相关性,5厘米基质日均增温2—5℃。电热线无上育苗具有出苗齐而快,幼苗长势健壮,根系发达、叶数多、茎粗、干物质积累多,开花早、果实成熟早,早期产量、产值高的作用。番茄在播后3天,出苗率达70％以上,比对照提高75％;出苗期比对照提早4天,黄瓜出苗期比对照提早2天。番茄幼苗全株干重、黄瓜苗鲜重分别比对照提高86.5％.21.8％。番茄始花期与果实成熟期比对照分别提早3天、4天,早期产量、产值分别提高30.1%、39.5%。
This article mainly discussed tomato, cucumber hotline soilless nursery effect. The experimental results show that the electric heating line has obvious warming effect under the condition of low temperature (1517 ℃) in winter and spring, and can be controlled by itself. The correlation coefficient with the air temperature in the greenhouse is r = 0.4267, Centigrade daily average temperature 2-5 ℃. Electric hotline nursery seedlings with the emergence of Qi and fast, robust seedling growth, root system, leaf number, stem diameter, dry matter accumulation, early flowering, fruit ripe early, early yield, high output value. Tomato 3 days after sowing, the emergence rate of 70% or more, 75% higher than the control; seedling stage 4 days earlier than the control, cucumber seedling stage 2 days earlier than the control. The whole plant dry weight of tomato seedlings, fresh weight of cucumber increased by 86.5%, 21.8% respectively compared with the control. The flowering and fruit ripening stages of tomato were 3 days and 4 days earlier than the control, respectively. The early yield and the value of output increased by 30.1% and 39.5% respectively.