摘要
本试验在土壤碱解N 138mg/kg土、速效P2O5 31.5mg/kg土、速效K(K2O) 100.20mg/kg土,N、P种肥施用量采用两因素重复D-饱合设计(12区),N、P2O5施用量分别在0~270kg/hm2和0~443.55kg/hm2的条件下,探讨甜菜生长动态,用Logistic生长方程描述块根鲜重的增长过程,以二次多项式拟合叶丛鲜重的变化,12个小区的分析结果表明:块根产量与CR1、CR2、CR3、D2、T2、y'max、Mmax、b1 8个参数呈显著正相关,与D3、TT、2b2显著负相关;产糖量与GR1、GR3、D2、T、T2、b16个参数显著正相关,与D3、TT、2b2显著负相关;含糖率与D1、D2、T呈较明显的正相关,与CR2、D3、y'max、Mmax、TT、b1呈较明显的负相关。甜菜块根产量、 含糖率、 产糖量与N、P施用量呈显著的二次回归关系。在黑土低糖病区, 施N 120kg/hm2、P2O5 210kg/hm2,获得较高的根产量(32.32~34.39t/hm2)和产糖量(3.941t/hm2),施N 90kg/hm2、P2O5 225kg/hm2,获得较高的含糖率(13.22%),高糖地区含糖率达到(16.9%以上)。在轻盐碱地甜菜低糖区,施N 150kg/hm2、P2O5 280kg/hm2,获得较高的根产量(39.00t/hm2)、产糖量(4.606t/hm2)和含糖率(11.81%),高糖地区含糖率达到(16.9%以上)。
This test conducted with two factors of N P fertilizer and D-saturation Design12 plots in the soil of alkaline hydrolysis N 138 mg/kg effective P 31.5 mg/kg effective K K2O 100.20mg/kg amount of N P2O5 fertilizer applied 0~270 kg/ha and 0~443.55 kg/ha the growth dynamic were approached. The testing results have showed that there is a positive correlation between root yield and GR1 GR2 GR3 D2 T2 y'max b1 and negative correlation to D3 TT 2b2 positive correlation in sugar yield GR1 GR3 D2 T T2 b2 negative correlation to D3 TT 2b2 positive correlation to sugar content: D1 D2 negative correlation: GR2 D3 y'max Mmax TT b1 N P fertilizer applied in low sugar content areas that N 120kg/ha P2O5 210kg/ha have got higher root yield32.32~34.39 t/ha sugar yield 3.941t/ha N 90 kg/ha P2O5 225kg/ha applied and got higher sugar content 13.22% above 16.9% could get it in high sugar content areas in light alkaline soil low sugar content areas N150kg/ha P2O5 280kg/ha applied got higher root yield 39t/ha sugar yield 4.606 t/ha sugar content 11.81% above 16.9% in high sugar content areas.
出处
《中国糖料》
2000年第4期11-15,共5页
Sugar Crops of China
关键词
甜菜
生长动态
氮
磷
营养
: sugarbeet N、 P nutrient growth dynamic