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2 甘薯生长前期不同氮用量处理的单株薯数和生物量 N20、N21、N22和N23表示田间微区试验中4个不同用量氮肥处理, 分别为0、60、120和240 mg N kg -1 土。相同测定项目标以不同字母的值在 P =0.05水平上差异显著。
Fig. 2 Number of tuberous roots and biomass per plant of sweetpotato at early growth stage under different nitrogen rates N20, N21, N22, and N23 were the four treatments with different nitrogen rates in field mini-plot experiment, which were 0, 60, 120, and 240 mg N kg -1 soil, respectively. Values followed by different letters in the same trait are significantly different at P =0.05.