基于磷肥施用深度的夏玉米根层调控提高土壤氮素吸收利用

陈晓影,刘鹏,程乙,董树亭,张吉旺,赵斌,任佰朝,韩坤

The root-layer regulation based on the depth of phosphate fertilizer application of summer maize improves soil nitrogen absorption and utilization

Xiao-Ying CHEN,Peng LIU,Yi CHENG,Shu-Ting DONG,Ji-Wang ZHANG,Bin ZHAO,Bai-Zhao REN,Kun HAN

图2 磷肥施用深度对夏玉米植株根系性状的影响 标以不同字母的柱值间差异达0.05显著水平。CK: 不施磷肥; P5: 距离地表-5 cm处施磷; P10: 距离地表-10 cm处施磷; P15: 距离地表-15 cm处施磷; P20: 距离地表-20 cm处施磷。

Fig. 2 Effects of phosphorus application depth on biomass accumulation and distribution of summer maize roots Bars superscripted by different letters are significantly different among treatments at the 0.05 probability level. CK: no P applied; P5: phosphorus application depth was -5 cm; P10: phosphorus application depth was -10 cm; P15: phosphorus application depth was -15 cm; P20: phosphorus application depth was -20 cm. RDW: root dry weight; RLD: root length density; RSA: root surface area; RV: root volume.