微咸水膜下滴灌对温室乳瓜产量及品质的影响特性研究

本文采用正交试验,研究了防渗技术、微咸水利用方式对温室膜下滴灌乳瓜产量及品质的影响。结果表明,一定矿化度的微咸水灌溉会增加作物土壤根系层含盐量和阻碍作物根系吸水,在灌溉方式和灌水定额一定的情况下,虽然全塑料薄膜防渗保水效果强于四周塑料薄膜+底部粘土防渗,但是四周塑料薄膜+底部粘土防渗透气性好,土壤呼吸作用强,在高温时可以及时调节土壤温度,并有利于乳瓜根部呼吸和生长,使其光合速率升高,有助于乳瓜水分和干物质积累,从而获得增产。

Effects of drip irrigation under mulch with brackish water on yield and quality of milk-melon in greenhouse

The effects of seepage prevention technique and utilization of brackish water on yield and quality of milk-melon under drip irrigation under mulch in greenhouse has been studied by orthogonal test.The results showed that saline water irrigation with certain salinity could increase salt content in soil root layer and hindered water uptake by crop root system.Under certain irrigation mode and irrigation quota,although the anti-seepage and water-retaining effect of all-plastic film was better than that of surrounding plastic film and bottom clay,the anti-seepage and air-breathing ability of surrounding plastic film + bottom clay was good,and the soil temperature could be adjusted timely at high temperature,which was beneficial to the respiration and growth of the roots of milk-melon,which increased its photosynthetic rate and help water and accumulated dry of matter milk-melon to increase accumulate and reach high production.