基质加温系统对设施架式草莓生长结果的影响

Effects of substrate warming system on growth and development of strawberry frame cultivation in greenhouse

针对草莓冬季架式栽培中夜间基质温度较低,易造成草莓生长发育受限、早期产量较低、果实品质较差等问题,基于空气源热泵及热水管道加热技术集成开发了一种草莓架式栽培的基质加温系统.结果表明:应用该基质加温系统后,基质日均温较对照提高3.4℃以上,且基质温度维持在14℃以上,可为草莓提供较为稳定的根际温度;草莓植株花芽数、叶片数等生长指标显著提高,平均单株果实产量比对照提高17.8%,优质果率提高28.6%.该系统能够有效满足草莓生长发育中根际温度的需要,促进草莓的生长与开花结果.

In order to improve the temperature of the substrate for strawberry frame cultivation,a new type of substrate warming system have been presented based on the air source heat pump technology.Experimental evaluation of the system was conducted during winter months by strawberry frame cultivation in a greenhouse,the effect of the system on substrate temperature,the growth,the fruit quality and the yield of the strawberry were investigated.The results showed that the heating system could significantly increase the average daily substrate temperature of 3.4℃compared with the control,the substrate temperature remained above 14℃during the experiment and the heating effect is obviously.It was observed that the substrate temperature remained within desirable range during different stages of strawberry growth by using the system,the growth index such as flower bud number and leaf number of plant increased significantly with heated treatment,the strawberry yield was 17.8%higher and the high quality fruit rate increased by 28.6%than control.Therefore,this substrate warming system could be an alternative for improving the temperature of the substrate and promoting the growth and development of strawberry frame cultivation in greenhouse.