我国褐土耕地质量的演变及对生产力的影响
陈延华1,2,王乐1,张淑香1(
),郭宁3,马常宝4,李春花1(),徐明岗1,邹国元2
),郭宁3,马常宝4,李春花1(),徐明岗1,邹国元2
Quality Change of Cinnamon Soil Cultivated Land and Its Effect on Soil Productivity
YanHua CHEN1,2,Le WANG1,ShuXiang ZHANG1(),Ning GUO3,ChangBao MA4,ChunHua LI1(),MingGang XU1,GuoYuan ZOU2
),Ning GUO3,ChangBao MA4,ChunHua LI1(),MingGang XU1,GuoYuan ZOU2
图6. 耕地质量和施肥量与作物产量关系的RDA分析
NF：氮肥用量,PF：磷肥用量,KF：钾肥用量,TST：土壤耕层厚度,BD：土壤容重,pH：土壤酸碱度,SOM：土壤有机质,Olsen-P：土壤有效磷,AK：土壤速效钾,SAK ：土壤缓效钾。数字1代表小麦产量的影响因素,数字2代表玉米产量的影响因素
Fig. 6. RDA analysis of the relationship between cultivated land quality crop yield,fertilizer application and crop yield
NF, PF and KF represent N P K fertilizer application rate respectively. TST: Topsoil thickness, BD: Bulk density, SOM: Soil organic matter, Olsen-P: Soil available P, AK: Soil available K, SAK: Soil slow available K. 1 and 2 on the back of the index represent the effect of the influencing factors on the wheat yield and the corn yield respectively
