甘薯源库关系建立、发展和平衡对氮肥用量的响应

宁运旺, 马洪波, 张辉, 汪吉东, 许仙菊, 张永春^*

Response of Sweetpotato in Source-Sink Relationship Establishment, Expanding, and Balance to Nitrogen Application Rates

NING Yun-Wang, MA Hong-Bo, ZHANG Hui, WANG Ji-Dong, XU Xian-Ju, ZHANG Yong-Chun^*

图3 不同氮用量处理的甘薯单株薯数变化趋势 Su16和Su11表示2个不同株型的甘薯品种, 分别为苏薯16 半直立株型和苏薯11 匍匐株型。N30、N31和N32表示田间裂区试验中3个不同用量氮肥处理, 分别为0、120和240 kg N hm -2 。
Fig. 3 Change trends of number of tuberous roots in sweetpotato under different nitrogen rates Su16 and Su11 were the two sweetpotato varieties with diverse plant type, which were Su16 with half-erect vine and Su11 with creeping vine. N30, N31, and N32 were the three treatments with different nitrogen rates in field split-plot experiment, which were 0, 120, and 240 kg N hm -2 , respectively.