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为了明确冀东地区晚播冬小麦营养元素吸收特性，采用田间试验与室内化验分析相结合的方法对冀东地区晚播高产冬小麦京冬8号Ca、Mg、S吸收特性进行了研究。结果表明，籽粒产量在8 111.5 kg·hm^-2水平时，平均每生产100 kg籽粒，植株需吸收Ca 1.221 kg、Mg 0.397 kg、S 0.454 kg，比例为 1.00∶0.33∶0.37。挑旗至开花期是植株对Ca、Mg吸收强度最大的时期，分别占最大吸收量的43.27%、48.50%；拔节至挑旗期是植株对S吸收强度最大的时期，占最大吸收量的44.79%。到成熟时植株吸收的Ca、S主要贮存在茎秆中，分别占植株最大吸收量的32.38%、39.87%；Mg主要贮存在籽粒中，占植株最大吸收量的29.53%。不同时期各器官中Ca、Mg、S的含量不同。

英文摘要:

To understand the assimilation characteristcs of Ca, Mg, and S in late sowed high yield winter wheat in eastern Hebei Province, the study combined the method of field experiment with indoor analysis to investigate the assimilation characters of Ca, Mg and S in late sowed high yield winter wheat (Jingdong 8). The results showed that under the yield level of 8 111.52 kg·hm^-2, to produce every 100 kg grain, the plants should assimilate 1.221 kg Ca, 0.397 kg Mg, and 0.454 kg S, of which the proportion being 1.00∶0.33∶0.37. The flaging to blossom stage was the stage in which plants assimilated Ca and Mg at the maximum value, which were 43.27% and 48.50% of the total assimilation value, respectively; while the jointing to flaging stage was the period in which plants assimilated S at the maximum value, being 44.79% of the total assimilation value. At mature stage, Ca, and S assimilated by plants were mainly stored in stems, being 32.38% and 39.87% of the total assimilation value, respectively; and Mg was mainly stored in the grain, being 29.53% of the total assimilation value. In different stages, the contents of Ca, Mg and S were different in different organs.

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