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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8 111.5 kg/ha水平下,平均每生产100 kg籽粒植株需吸收N 2.780 kg、P2O51.458 kg、K2O 4.833 kg。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P2O5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。
In order to provide a basis for high yielding cultivation of late winter wheat in Jidong area, the main wheat variety Jingdong 8 in eastern Hebei was used as experimental material to study the characteristics of N, P and K uptake by late-sowing high-yielding winter wheat. The results showed that at the level of 8 111.5 kg / ha, the average yield of grain per 100 kg was N 2.780 kg, P2O51.458 kg and K2O 4.833 kg. The stage of jointing to the stage of picking is the period when the plants absorb the most N, accounting for 41.01% of the total absorption. During the period from the flagging stage to the flowering stage, the plant has the largest absorption intensity of P2O5 and K2O, accounting for 31.77% And 35.49%. N and P2O5 absorbed by plants at maturity were mainly stored in grains, accounting for 58.49% and 57.02% of total plant absorption, respectively. K2O was mainly stored in stems, accounting for 60.30% of total plant absorption. Different organs in different periods of N, P2O5, K2O content is different.