沿海地区不同棚型温度效应及对西瓜生长的影响

Temperature Effect of Different Greenhouses and Their Effects on Watermelon Growth in the Coastal Regions

为探讨江苏沿海地区不同棚型保温增温效果,通过设计4种棚型,以当地同区域气象资料为对照,采用3棚4膜覆盖栽培技术,分析测定棚内温度状况、西瓜的生长情况、产值、效益。结果表明:早春大棚种植西瓜,2月中下旬播种,5月初上市,选用P3棚(宽度6 m,高度2.2 m),3棚4膜覆盖模式最佳,该棚型温度适宜,西瓜长势强,品质好,效益高;其次P1棚(宽度5 m,高度1.8 m),搭建方便,成本低,易移动,效益稳;P2棚(宽度5 m,高度2 m)、P4棚(宽度7 m,高度2.45m),保温效果、西瓜生长、效益无优势,不建议选用。

To investigate the effect of different greenhouses on heat insulation and temperature increasing in the coastal re-gions of Jiangsu,four greenhouse types were designed. As referred with the local regional meteorological data,we employed the three shed four film covering cultivation and determined the greenhouse temperature variations,and the growth status, output and economic efficiency of watermelon. The results showed that： when planting watermelon in greenhouse at early spring stage,sowing in mid- and late-Feb,the watermelon would be marketing in May. The optimal mode was P3 type greenhouse （width ＆#215; height=6 m＆#215;2.2 m） containing three shed and four film covering. Employing the P3,the temperature was suitable,and the watermelon could possess well growth,good quality and high efficiency,In addition,the P1 type green-house （width ＆#215; height = 5 m ＆#215; 1.8 m） still possessed the advantages that it was easy to build and move with low cost,and owned stable efficiency;Besides,it was not recommended to us P2 （width ＆#215; height=5 m＆#215;2 m） and P4 （width ＆#215; height=7 m＆#215;2.45 m）,because of no superiority of them in heat insulation,plant growth and economic efficiency.