不同磷肥对石灰性土壤磷效率小麦基因型生长发育的影响

Effects of different forms of P fertilizers on P availability in calcareous soil and growth of wheat with different genotypes

田间试验和测试结果表明 ,磷酸二铵、普钙和沉淀磷肥分别比对照增产 2 1 .8%、1 7.9%和 1 1 .3 %.对枸溶性磷肥 ,磷高效基因型冀 87-4 61 7小麦比对照增产 1 3 .9%,而磷低效基因型的秦麦 1号仅增产 2 .9%.对各种磷肥的利用率亦以冀 87-4 61 7最高 ,秦麦

Di-calcium phosphate, calcium superphosphate, and precipitate phosphoric fertilizer increased wheat yields by 12.8, 17.9, and 11.3% respectively compared with the control. Using citric-dissolvable phosphate fertilizer, the wheat cultivar with a genotype of high P efficiency, Jin-87-4617, yielded 13.9% higher than the control, while the wheat cultivar with a genotype of low P efficiency, Qinmai-1, increased yield only by 2.9% compared with the control. Therefore, the efficiency of P fertilizer for Jin-87-4617 was higher than that for Qinmai-1.