河南农业大学学报2009，Vol.43Issue(5)：485-490,6.
微喷灌水定额对烟田土壤物理性状和养分运移的影响
Effect of irrigating water quota with micro-irrigation on soil physical properties and nutrient transport in different layers of tobacco soil
摘要
Abstract
The experiment was conducted in loam soil of central area of Henan to investigate the effect of irrigation quota with micro irrigation system on soil physical properties and available nitrogen and potassium contents in different soil layers of tobacco field. The results showed that micro irrigation was able to control the irrigation quota and to decrease soil volume weight compared with traditional furrow irrigation. In the range of 24 to 36 mm of quota , micro irrigation not only provided sufficient water supply, but also kept the moist soil within the tillage layer. 24 hours after irrigation, available N contents in 0～30 cm soil for all irrigating treatments were higher than those for the control with no irrigation , and had increasing trend with increased irrigation quota. While at the round top stage, the opposite trend existed, with no irrigation control being the highest. The traditional furrow irrigation had too deep moist soil and caused nutrition leaching beyond tillage layer . 24 hours after irrigation, the availa?ble N content in the tillage layer was lower than that in 36 mm micro-irrigation treatment, and the available K content was the lowest among all treatments. While in soil under 20 cm, available N content increased, and in soil under 30 cm, available K content were at high levels.关键词
烟草/微喷/灌水定额/土壤容重/碱解氮/速效钾Key words
tobacco/micro-irrigation/irrigation quota/volume weight of soil/available nitrogen/ available potassium分类
农业科技引用本文复制引用
史宏志,高卫锴,常思敏,邸慧慧,王廷晓,杨素琴,王太运,王广胜..微喷灌水定额对烟田土壤物理性状和养分运移的影响[J].河南农业大学学报,2009,43(5):485-490,6.基金项目
国家烟革专卖局重大科技项目(110200302009) （110200302009）
