相同气候背景下南北方稻田土壤上水稻生长及氮响应差异研究

黄秋红,刘智蕾,李鹏飞,车俊杰,于彩莲,彭显龙

Difference in Nitrogen Responses and Nitrogen Efficiency of Different Paddy Soils in Southern and Northern China Under the Same Climatic Condition

HUANG QiuHong,LIU ZhiLei,LI PengFei,CHE JunJie,YU CaiLian,PENG XianLong

表3 2018年与2019年水稻地上部干重、产量与氮效率

Table 3 Rice dry weight, yield and nitrogen efficiency in 2018 and 2019

年份 Year 土壤类型 Soil type 处理Treatment 地上部干重 Dry weight (g/pot) 产量 Yield (g/pot) AEN (kg·kg-1) PFPN (kg·kg-1) Y0/Nr (kg·kg-1) REN (%) PEN (kg·kg-1) 2018 黑土型水稻土 Black paddy soil N0 84.69c 29.73c N1 135.79b 44.61b 17.39a 52.13a 34.75a 41.08a 41.74a N2 178.80a 67.04a 21.69a 38.97b 17.28b 49.09a 44.22a 乌栅土型水稻土 Gleyed paddy soil N0 108.39c 38.84c N1 139.44b 50.09b 13.08a 58.23a 45.15a 34.89a 37.56a N2 160.99a 61.43a 13.13a 35.71b 22.57b 39.42a 33.29a N ** ** ns ** ** ns ns S * * ** ns ** * * N×S ** * ns ** ns ** ns 2019 黑土型水稻土 Black paddy soil N0 78.51c 41.18b N1 144.33b 80.41a 45.85a 93.98a 48.13a 59.30a 79.10a N2 168.83a 83.52a 24.61b 48.55b 23.94b 54.10a 45.81b 乌栅土型水稻土 Gleyed paddy soil N0 85.62c 48.12c N1 149.84b 83.17b 40.75a 96.69a 55.94a 58.86a 70.46a N2 179.37a 94.11a 26.73b 54.70b 27.97b 50.65a 52.82b N ** ** ** ** ** ns ** S * ns ns * ** ns ns N×S ns ns ns ns ns ns ns