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

图2 不同土壤上水稻分蘖数对氮素的响应 3W代表水稻移栽后第3周,5W代表水稻移栽后第5周,ES代表拔节期,MS代表成熟期;N代表施氮量,S代表土壤类型,N×S代表氮量与土壤的交互作用;*,**在5%与1%水平下的显著性,ns代表差异不显著。在同一时期,不同小写字母代表黑土型水稻土不同氮量间差异显著（P<0.05）,不同大写字母代表乌栅土型水稻土不同氮量间差异显著（P<0.05）。下同

Fig. 2 Response of rice tiller number to nitrogen in different soils 3W: 3 weeks after translating; 5W: 5 weeks after translating; TS: Tilling stage; ES: Elongation stage; MS: Maturity stage. N: Nitrogen rate; S: Soil type; N×S: Interaction of nitrogen and soil; *, **: Significance at 5% and 1% levels, respectively; ns: Non-significance. During the same period, different lowercase letters indicate the significant difference between different nitrogen level in the black paddy soil (P<0.05), different capital letters indicate the significant difference between different nitrogen level in the gleyed paddy soil (P<0.05). The same as below