土壤改良剂对设施黄瓜生长及土壤状况的影响

Effects of soil conditioners on cucumber growth and soil conditions under protected culture

以黄瓜为供试材料,研究4种土壤改良剂对植株生长、土壤理化性状及微生物的影响。结果表明:制剂1处理的黄瓜植株茎粗、最大叶面积、产量分别较对照提高19.2%、15.0%、4.1%,土壤硝态氮含量及EC值分别降低57.5%和31.5%,土壤微生物总量提高84.3%;制剂2处理的黄瓜最大叶面积较对照提高15.9%,土壤硝态氮含量及EC值分别降低61.8%、39.3%,微生物总量提高36.1%,但产量降低3.4%;制剂3和4对黄瓜植株生长和土壤状况影响不显著,但产量分别较对照降低6.3%和4.1%。以黄瓜生长、产量及土壤品质作为衡量指标,设施黄瓜的土壤改良及修复以土壤改良剂1处理为宜,其次是制剂2。

The greenhouse culture of cucumber was carried out to study the effects of 4 soil conditioners on the plant growth,soil physical and chemical characteristics and soil microorganism.The experimental result showed that compared with CK,Conditioner 1 treatment increased the plant＇s stem diameter,maximal leaf area and yield respectively by 19.2%,15.0%and 4.1%,decreased the soil nitrate nitrogen and EC value respectively by 57.5%and 31.5%,and increased the total soil microorganism by 84.3%;Conditioner 2 treatment increased the plant＇s maximal leaf area and the total soil microorganism respectively by 15.9%and 36.1%,but decreased the soil nitrate nitrogen and EC value and the yield respectively by 61.8%,39.3%and 3.4%;Conditioner 3 and 4 treatments had not a significant effect on the plant growth and the soil conditions but reduced the yield respectively by 6.3% and 4.1%.It was concluded that in terms of the plant growth and yield and the soil quality,Conditioner 1 treatment was the most suitable for greenhouse culture of cucumber,and Conditioner 2 treatment was next.