期刊论文

中文

土壤学报

0564-3929

2012

49

1

111-120

国家科技支撑计划项目（2006BAD17B08-03）资助；

本校为第一机构

通过定位大田和田间小区试验,研究了不同蔬菜类型及不同施肥结构对菜园土壤养分径流损失的影响。结果表明:菜园土壤养分径流损失以氮为主,钾素次之,磷素最少。种植辣椒作物由于施肥量大于南瓜,氮、磷、钾养分的淋失显著高于南瓜地。白菜地磷、钾养分的淋失显著高于甘蓝地。春、夏季蔬菜地氮、磷、钾养分的淋失高于秋、冬季蔬菜地。在茄子生育前期,当地菜农习惯施肥处理(CK2),氮、磷养分的淋失较其他处理严重,单施化肥处理(NPK),钾养分的淋失较其他处理严重。白菜、甘蓝地前2次径流水样中,习惯施肥和单施化肥处理氮、磷、钾养分的淋失较其他处理严重。施用有机肥料,在蔬菜生育后期氮、磷、钾养分...

Through long-term stationary field and plot experiments, effects of vegetable type and fertilization structure on nutrient loss with runoff were studied. Results show that nitrogen was the main nutrient element lost from vegetable field with runoff, and followed by potassium and phosphorus. NPK leaching was significantly higher in hot pepper field than in pumpkin field, because the former received a higher rate of fertilizer. P and K leaching was obviously higher in Chinese cabbage field than in cabbage field. NPK leaching from vegetable fields...