摘要
用容重分别为1．2、1．4和1．6g／cm^3的土壤进行盆栽试验，研究了土壤紧实度对黄瓜生长、产量及养分吸收的影响。结果表明，当土壤紧实度增大时，黄瓜秧苗的株高在定植后的15d后受到显著抑制；第4叶的叶宽和叶长在定植后9～17d内增加；茎粗则是在稍紧的土壤中（R1．4）最大，过紧的土壤中（R1．6）最小；根系伸长生长受阻，干物质质量及活力显著下降，根冠比降低；生物学产量、经济产量、经济系数的变化情况及植株对氮、磷、钾吸收量的变化与茎粗的变化趋势相同。在本试验条件下，容重为1．2g／cm^3的土壤利于株高及根系的生长，容重1．4g/cm^3的土壤则利于茎粗、根系养分的吸收及产量的增加。
A pot culture experiment was conducted to investigate the effects of soil with different bulk densities（ 1.2,1.4 and 1.6 g/cm^3） on the growth, yield and nutrient uptake of cucumber plants. The results showed that the increase of soil compaction depressed plant height of cucumber seedling significantly after planting 15 days; the width and length of the forth leaf after fix planting 9-17 days increased; stem thickness of plants, biological yield, economic yield, economic coefficient and total absorptive capacity of N, P and K were the largest in the slightly compacted soil （R1.4）, while those parameters are the lowest in the most compacted soil （R1.6）. Soil with 1.2 g/cm^3 bulk density was most favorable for the plant height and root growth of cucumber plants, and soil with 1.4 g/cm^3 bulk density was most favorable for the stem thickness, yield and nutrient uptake of cucumber plants under this experiment conditions.
出处
《植物营养与肥料学报》
CAS
CSCD
北大核心
2006年第4期559-564,共6页
Journal of Plant Nutrition and Fertilizers
关键词
黄瓜
土壤紧实度
产量
养分吸收
cucumber
soil compaction
yield
nutrient uptake
