PO薄膜和EVA薄膜对温室内光温环境及番茄生长发育的影响

Effects of PO and EVA Films on Light and Temperature in Greenhouse and Growth and Development of Tomato

通过对PO和EVA薄膜温室连续8个月的光照环境的测量,分析比较了两种薄膜的透光率和温室温度变化,并测定了两种温室相同位置番茄的株高、茎粗及产量,比较其生长发育状况。结果表明:PO薄膜比EVA薄膜具有更好的透光性和增温、保温效果,能显著促进番茄生长和提高产量。

The light transmittance and temperature in PO and EVA greenhouses were continuously measured and analyzed for 8 months.Meanwhile,the plant height,stem diameter and yield of the tomato in the same location of the two kinds of greenhouses were determined and compared too.The results indicated that the PO film showed higher light transmittance and better effects on increasing and keeping temperature than EVA film,so the tomato growth could be promoted and high yield could be obtained.