植物营养与肥料学报2013，Vol.19Issue(4)：816-823,8.DOI:10.11674/zwyf.2013.0406
河西走廊制种田与生产田玉米需肥特点比较
Comparison on nutrient requirement characteristics of seed-producing corn and yield-producing corn in the Hexi Corridor
摘要
Abstract
Hexi Corridor,Gansu Province,is the largest corn seed production base in China.Over use of chemical fertilizers in corn seed production is common in this area.The amount of nutrients for forming 100 kg economic yield and the nutrient absorption characteristics were compared between inbred line seed-producing corn and yieldproducing corn from the same breeding line.The results show that the yield of seed-producing corn is lower than that of yield-producing corn,about 61.14 percent of the yield-producing corn.The average uptake amounts of nitrogen,phosphorous and potassium for forming 100-kg grain in seed-producing corn are 2.653 kg,1.115 kg and 3.447 kg with the N∶P2O5∶K2O ratio of 1∶0.42∶1.30,less than those in yield-producing corn,and about 73.8％,62.4％ and 73.3％ of the yield-producing corn,respectively.There are differences in the nutrient accumulation between seed-producing corn and yield-producing corn.More nutrients are absorbed in seedproducing corn at the seedling stage; similar amounts to yield-producing corn are absorbed at the jointing stage,and less required after the jointing stage.The total nutrient requirement in seed-producing corn is 63.0％-85.3％ of that in yield-producing corn.Therefore,less fertilizer should be applied and more nutrients should be provided in the early growing stage in seed-producing corn.关键词
制种玉米/大田玉米/百公斤产量需肥量/养分累积特点Key words
seed-producing corn/ yield-producing corn/ 100 kg yield nutrient requirement/nutrient absorption characteristic分类
农业科技引用本文复制引用
索东让,李隆,孙宁科,吴海燕..河西走廊制种田与生产田玉米需肥特点比较[J].植物营养与肥料学报,2013,19(4):816-823,8.基金项目
甘肃省农业科技创新专项(2010GAAS06)资助. （2010GAAS06）
