冀东晚播高产冬小麦氮磷钾吸收特性的研究  

Assimilation Characteristics of N,P_2O_5 and K_2O in Late-sown High Yield Winter Wheat in Eastern Hebei Province

作　　者：吴旭银[1] 吴贺平[1] 李彦生[1] 周印富[1] 张淑侠[1] 

机构地区：[1]河北科技师范学院,河北秦皇岛066004

出　　处：《麦类作物学报》2009年第3期530-534,共5页Journal of Triticeae Crops

基　　金：河北省"十一五"科技攻关项目(6220103D)

摘　　要：为给冀东地区晚播冬小麦的高产栽培提供依据，以冀东地区主栽小麦品种京冬8号为材料，通过大田试验研究了晚播高产冬小麦氮磷钾吸收特性。结果表明，籽粒产量在8111.5kg／ha水平下，平均每生产100kg籽粒植株需吸收N2．780kg、P2O5 1．458kg、K2O 4．833kg。拔节期～挑旗期是植株对N吸收强度最大的时期，占总吸收量的41．01％；挑旗期～开花期是植株对P2O5和K2O吸收强度最大的时期，分别占总吸收量的31．77％和35．49％。成熟时植株吸收的N和P205主要贮存在籽粒中，分别占植株总吸收量的58．49％和57．02％；K2O主要贮存在茎秆中，占植株总吸收量的60．30％。不同时期各器官中N、P2O5、K2O的含量不同。To know the assimilation characteristics of N, P2O5 and K2O in late-sown high yield winter wheat in eastern Hebei Province, the method of combining field experiment with indoor analysis was applied in the study. The results showed that： under the yield level of 8 111.52 kg/ha, to produce every 100 kg grain, the plants should assimilate 2. 780 kg N, 1. 458 kg P2O5, and 4. 833 kg K2O. Jointing-flagging stage was the stage in which plants assimilated N at the maximum value, which was of 41.01% of total assimilation value; the period from flagging to blooming was the period in which plants assimilated most of P2O5 and K2O, being 31.77% and 35.49% of the total assimilation value, respectively. At mature time, N, and P2O5 assimilated by plants were mainly stored in the grain, being 58.49% and 57.02% of the total assimilation value, respectively; K2O was mainly stored in stems, being 60.30% of the total assimilation value. At different stages, the content of N, P2O5 and K2O were different.

关 键 词：冬小麦 晚播 氮 磷 钾 吸收特性 

分 类 号：S512.1[农业科学—作物学] S311