摘要
在干旱次生盐渍化土壤条件下,采用"3414"配方施肥方案,研究了氮、磷、钾配施对红花产量构成因子的影响。结果表明,配方施肥对红花株高、分枝高、单株花球数、花冠和籽粒产量均有显著影响,其中以配施N 180kg/hm2、P 90kg/hm2、K 120kg/hm2的处理N2P2K2红花花冠和籽粒产量最高。分别对红花花冠产量和红花籽粒产量与氮、磷、钾肥料的相关性进行回归分析,均达到显著水平。在干旱灌区次生盐渍化土壤上,红花花冠理论最高产量为667.98kg/hm2,最佳施肥量为N 150.59kg/hm2、P2O593.09kg/hm2、K2O 98.75kg/hm2;红花籽粒理论最高产量为2 644.47kg/hm2,最佳施肥量为N 169.50kg/hm2、P2O594.60kg/hm2、K2O 102.75kg/hm2。
A field experiment was conducted to growth of safflower （Carthamus tinctorius） on investigate the influence of different fertilizer formulae on the a secondary salinization soil in a drought irrigation area. Appli- cation rates of N, P, and K was designed with a 3414 strategy, a method generally used for fertilization for- mulae experiments. Application rates of N, P, and K had significant effects on plant height, ramose tallness, numbers of flowers, yield of flowers, and grain yield of Safflower. N2P2K2 （namely N P ： K=180 ： 90 ： 120） treatment gave the highest yield of flowers and grain production. A step by step regression curve was done to determine the relationship of corolla production and grain yield of Safflower with application rates of N, P and K. It showed that a fertilizer application rate of N 150.59 kg/ha, P2Os 93.09 kg/ha and KzO 98.75 kg/ha was good for corolla production, and the highest theoretical yield was 667.98 kg/ha. For grain yield, the best fertil- lzer a retlca pplication rate was N 1 grain yield of 2 644. 169.50 kg/ha, P20~ 94.60 kg/ha and K20 102.75 kg/ha, giving the highest theo- 47 kg/ha on secondary salinization soil in a drought irrigation area.
出处
《草业学报》
CSCD
北大核心
2013年第5期205-211,共7页
Acta Prataculturae Sinica
基金
兰州市科技发展计划项目(2009-1-147)资助
关键词
红花
干旱灌区
次生盐渍化土壤
配方施肥
safflower
drought irrigation area
secondary salinization soil
formula fertilize
