不同覆盖材料的荒地种植西瓜试验研究

Experimental study on Watermelon with Different Mulch Materials in Barren Land

针对压砂地随使用年限老化、失效及种植过程中不便于土壤翻耕问题,通过在土地上铺设不同覆盖材料种植西瓜,对种植过程中0~60 cm深土壤水分变化,作物光合速率、覆盖层下土壤表面温度变化以及作物产量与生理指标进行分析比较。结果表明,利用当地砂石并添加大比例粉煤灰制成的混凝土板材满足土地耕作强度要求,具有较好的经济性、耐久性、保温性及保水性能。这种铺设连续型板材材料覆盖下的西瓜产量接近传统压砂地,同时可有效减少砂土混合并便于压砂地轮作翻耕。此种板材铺设荒地种植西瓜为改善压砂地老化失效提出新的思路。

Aiming at the problem that the gravel land will be ageing and disabled and inconvenient for repeatedly plowing, the experiment is conducted with different mulch materials in barren land. Through analyzing the change of soil moisture content at 0 - 60 cm depth, photosyn- thetic rate, the change of soil temperature, output and physiologic index under different mulch materials, the resuhs show that the intensity of concrete slabs made by local sandstone and plenty pulverized coal ash can meet the demands of planting watermelon, and has the better eco- nomic efficiency, durability, moisture capacity and thermal Insulation. The physiologic index of watermelon using this kind concrete slab is outstanding. At the same time, it effectively reduces the mixing in the land and is easy for rotation tillage. Using this kind of concrete slab to planting watermelon puts forward new ideas for improving the gravel land.