不同轮作模式对黄瓜幼苗生长及土壤化学性质的影响

Effect of soil chemical properties on cucumber seedlings grow in different rotation system soils

试验以设施内不同轮作栽培方式土壤为研究对象,分析土壤pH、EC值、有机质和4种速效养分含量及对黄瓜幼苗生长的影响,筛选适合黄瓜生长的轮作土壤。结果表明,7种不同轮作模式中,番茄-芹菜-黄瓜-白菜(Ⅱ)、黄瓜-菜豆-黄瓜-白菜(Ⅴ)、黄瓜-番茄-黄瓜-白菜(Ⅶ)轮作土壤的黄瓜幼苗全株干鲜重、土壤pH、有机质和速效磷含量显著高于连作对照,土壤EC值、氨态氮、硝态氮、速效钾含量显著低于连作对照。比较7种不同轮作土壤可知,番茄-芹菜-黄瓜-白菜(Ⅱ)、黄瓜-菜豆-黄瓜-白菜(Ⅴ)、黄瓜-番茄-黄瓜-白菜(Ⅶ)3种轮作土壤更有利于促进黄瓜幼苗生长。

The experiment took the soils of different rotation cultivation methods in the greenhouse as the research objects, the soil pH, EC, organic matter and the contents of four available nutrients and their effects on the growth of cucumber seedlings were analyzed in order to select the rotation soil suitable for cucumber growth. The results showed that in seven different rotation modes, the fresh and dry weight of the whole cucumber seedlings, the soil pH, the content of soil orgic matter and available phosphorus of tomato-celery-cucumber-cabbage(Ⅱ), cucumber-pea-pea-cucumber-cabbage(Ⅴ), cucumber-tomato-cucum-ber-cabbage(Ⅶ) were significantly higher than those of the monoculture soil;soil EC, the contents of ammonia nitrogen, nitrate nitrogen, available potassium in these treatments were significantly higher than those of the monoculture soil. In conclusion, compared with seven different rotation soils, the treatments including tomato-celery-cucumber-cabbage(Ⅱ), cucumber-pea-pea-cucumber-cabbage(Ⅴ), cucumber-tomatocucumber-cabbage(Ⅶ) were more suitable for cucumber seedling growth.