期刊论文

中文

作物研究

1001-5280

2015

29

4

357-361

10.3969/j.issn.1001-5280.2015.04.06

湖南省科技计划项目（2013tlS4036） “十二·五”农业公益性行业项目（201203081）.

本校为第一机构

通过田间试验研究了垄作梯式栽培对水稻养分吸收利用以及根区土壤养分的影响.结果表明:与平作相比,垄作梯式栽培处理水稻的生物量和千粒重显著提高,茎生物量高7.15％,叶生物量高6.88％,籽粒生物量高4.89％,千粒重高4.86％;与平作相比,水稻氮磷钾的总吸收量显著提高,分别高7.39％、12.84％和5.58％,经济系数和收获指数差异不显著;与平作相比,垄作栽培处理水稻根区土壤的氮磷钾含量显著提高,土壤碱解氮、有效磷和速效钾含量有较大幅度增加.综合分析,垄作梯式栽培提高了水稻养分吸收利用效率,保持了土壤肥力,水稻齐穗期前保肥能力显著提高.

A field experiment was conducted in Changsha city of Hunan province to investigate the effects of ridge and ter- raced rice farming （RT） on nutrient uptake and nutrient use efficiency of rice and soil nutrient contents. The results showed that,yield of Yliangyou No. 1 in the RT was increased significantly, the yield of stem, leaf, grain yield and grain weight was 7.15% ,6. 88% ,4. 89% and 4. 86% higher than that of conventional rice farming （CK） ,respectively. The to- tal uptake of N,P,or K in plants was significantly increased 7.39% , 12. ...