透光不織布對甘藍與洋香瓜栽培之研究

Studises of the Nonwoven Floating Covers on Cabbage and Muskmelon Production

以17g/m²白色不織布、綠色尼龍網不同覆蓋材料進行甘藍直接覆蓋栽 培，結果顯示：覆蓋不織布平均氣溫最高25.4°C，覆蓋尼龍網25.2°C次之，無覆蓋處理最低24.4°C，不同處理產量上無明顯差異，惟採收後葉球之外觀，以覆蓋不織布處理最佳，綠色尼龍網次之，無處理則蟲害發生嚴重。在冬季洋香瓜直接覆蓋栽培方面，不同規格不織布（20g/m²-30g/m²）之保溫效果以30g/m²效果最好，氣溫及地溫分別較無覆蓋處理高2.3°C及1.6°C。定植後40天子蔓發育長度較無覆蓋處理長28.9公分，不織布覆蓋之初期採收百分率仍以30g/m²最佳達40%，較PE布隧道棚及無覆蓋處理分別增加15及20%。

The covering materials that include the non-woven fabric (17gram/m²) and green nylon net are used in cabbage cultivation. The maximum average temperature under non-woven, nylon net cover and the control were 25.4°, 25.2° and 24.4°C, respectively. None significant difference is found between yield. However, the non-woven treatment had the best fruit quality and followed by green nylon net. The control is infected seriously by diseases. Used of 20 to 30 gram/m² non-woven fabric to cultivate muskmelon showed that the 30g/m² treatment was the best in maintaining temperature. The air and ground temperature were 2.3°C and 1.6°C higher than control, respectively. Forty days after planting, the branch stem length was 28.9 cm longer than control. The best percentage of harvesting in the early stage of covering, which counted for 40%, was observed in the treatment covered with 30g/m² of transparent non-woven fabric. The treatment was 15 and 20%, more than that covered with PE tunnel and non-covered control, respectively.