摘要
为了探索春小麦的营养特性,给合理施肥提供依据,以蒙麦28号为供试品种,研究了春小麦在不同密度、施肥量处理下氮、磷、钾三要素吸收及其利用率的变化。结果表明,在密度适宜、氮磷钾肥配施下,各生育阶段的氮磷钾吸收比例分别为:分蘖末期2.88:1:2.68,拔节盛期3.11:1:3.82,孕穗期2.82:1:2.80,开花期3.11:1:2.74,乳熟期2.91:1:2.11,完熟期3.07:1:2.19;每生产100kg籽粒需吸收N 3.75kg、P_2O_5 1.29kg和K_2O2.99kg;氮、磷、钾肥的利用率分别为N 35.25％、P_2O_5 24.25％和K_2O 67.45％。肥料利用率与经济产量呈显著正相关。
As experiment material, Mengmai 28 was taken to study N, P and K intake and change in utilization amount under different treatments of fertilizer and density. The results showed that under optimum density and balanced to fertilize N, P and K, the N, P and K intake rate were 2. 88 : 1 : 2. 68 at the end of tillering stage, 3.11 : 1 : 3. 82 at jointing stage, 2. 82 : 1 : 2. 80 at flowering stage, 2. 91 : 1 : 2.11 at milky stage, 3. 07 : 1 : 2. 19 at ripening stage. The average nutrition in yield was N 3. 75 kg, P2O5 1. 29 kg and K2O 2. 99 kg per 100 kg seeds, and the utilized ratio were N 35. 25%, P2O524. 25% and K2O 67. 45%. There was a significant correlation between fertilizer-utilized-ratio and economic yield.
出处
《麦类作物学报》
CAS
CSCD
2003年第3期103-106,共4页
Journal of Triticeae Crops
基金
内蒙古自治区科技厅"九五"重大科技攻关项目(960101)
