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通过田间小区试验,研究了4种施肥条件下(不施肥、单施磷肥、单施氮肥和氮磷配施)冷型小麦不同器官的磷素营养状况。结果表明,开花期,冷型小麦穗部的磷含量较高,在不施肥、单施磷肥、单施氮肥和氮磷配施时分别比暖型小麦高23.28%、35.63%、4.25%和2.04%,平均高14.88%;但茎部的磷含量比暖型小麦低23.98%、10.30%、20.00%和17.58%,平均低17.76%;成熟期冷型小麦籽粒中的磷含量分别比暖型小麦高5.09%、4.47%-、2.74%和18.18%,平均高5.93%,其它器官磷含量均较低。施磷肥可以增加籽粒中的磷素含量,而施用氮肥有降低籽粒中磷素含量的趋势。开花期到成熟期冷型小麦磷转运效率均高于暖型小麦,冷型小麦的磷素收获指数较高。暖型小麦的磷素营养对氮素供应比较敏感。
Field experiment was conducted to study the phosphorus nutrition of different organs under four different fertilization conditions (no fertilizer, single phosphate fertilizer, single nitrogen fertilizer and nitrogen and phosphorus) cold wheat. The results showed that in the flowering stage, the phosphorus content of cold-type wheat was higher than that of the warm-type wheat without fertilization, with single application of phosphate fertilizer, with single application of nitrogen fertilizer and with nitrogen and phosphorus application, respectively, at flowering stage, being 23.28%, 35.63%, 4.25% and 2.04 %, With an average height of 14.88%. However, the phosphorus content of stems was 23.98%, 10.30%, 20.00% and 17.58% lower than that of warm wheat, with an average of 17.76% lower than that of warm wheat. Phosphorus content of mature wheat was lower than that of warm wheat 5.09%, 4.47% -, 2.74% and 18.18%, respectively, with an average high of 5.93%. The phosphorus contents of other organs were lower. Phosphorus fertilizer can increase the content of phosphorus in the grain, while the application of nitrogen fertilizer has the tendency to reduce the content of phosphorus in the grain. Phosphorus transport efficiency of cold-type wheat from flowering stage to mature stage was higher than that of warm-type wheat, while cold-type wheat had a higher phosphorus harvest index. The phosphorus nutrition of warm wheat is more sensitive to nitrogen supply.