不同施肥年限下作物产量及土壤碳氮库容对增施有机物料的响应

盖霞普,刘宏斌,杨波,王洪媛,翟丽梅,雷秋良,武淑霞,任天志

Responses of Crop Yields, Soil Carbon and Nitrogen Stocks to Additional Application of Organic Materials in Different Fertilization Years

GAI XiaPu,LIU HongBin,YANG Bo,WANG HongYuan,ZHAI LiMei,LEI QiuLiang,WU ShuXia,REN TianZhi

表2 施肥类型、土层深度和施肥年限对土壤碳库、氮库和碳氮比影响的主体间效应检验（n=240）

Table 2 Interprincipal effect test of different fertilization types, soil depth and fertilization years on stocks of soil carbon and nitrogen and C/N ratio

变异来源 Variation source 因变量 Dependent variables Ш型平方和 Quadratic sum of squares Df Degree of freedom F Sig. Significance level 施肥类型 Fertilization types (T) 土壤碳库SOC stocks 12245.007 3 79.734 <.001 土壤氮库TN stocks 98.287 3 85.845 <.001 碳氮比Ratios of C to N 107.216 3 15.832 <.001 土层深度 Soil depth (D) 土壤碳库SOC stocks 141872.456 9 307.938 <.001 土壤氮库TN stocks 630.196 9 183.473 <.001 碳氮比Ratios of C to N 547.745 9 26.961 <.001 施肥年限 Fertilization years (Y) 土壤碳库SOC stocks 21584.778 1 421.653 <.001 土壤氮库TN stocks 4.216 1 11.047 <.001 碳氮比Ratios of C to N 138.014 1 61.140 <.001 施肥类型×土层深度 T×D 土壤碳库SOC stocks 2305.072 27 1.668 <.05 土壤氮库TN stocks 39.807 27 3.863 <.001 碳氮比ratios of C to N 60.212 27 0.988 >.05 施肥类型×施肥年限 T×Y 土壤碳库SOC stocks 2341.579 3 15.247 <.001 土壤氮库TN stocks 39.058 3 34.113 <.001 碳氮比Ratios of C to N 52.189 3 7.707 <.001 土层深度×施肥年限 D×Y 土壤碳库SOC stocks 4273.625 9 9.276 <.001 土壤氮库TN stocks 86.500 9 25.183 <.001 碳氮比Ratios of C to N 271.041 9 13.341 <.001 施肥类型×土层深度×施肥年限 T×D×Y 土壤碳库SOC stocks 2182.463 27 1.579 <.05 土壤氮库TN stocks 33.137 27 3.216 <.001 碳氮比Ratios of C to N 117.867 27 1.934 <.01