Comparative Study on the Effect of Nitrogen Rate on Dry Matter Accumulation and Grain Yield Between Waxy and Common Wheat

doi:10.7668/hbnxb.2014.S1.055

Abstract

Abstract: Field experiment was conducted to study the response of wheat plant growth and development and grain yield of LX987 and N50222 to nitrogen (N) rate.Three treatments were designed with N of 0,100,200 kg/ha,respectively.The results indicated that the ability for tillering and percentage of earbearing tiller of N50222 were inferior to LX987,which caused spike number of unit area of N50222 was lower than LX987;But grain number per spike of N50222 was significantly higher than LX987.The accumulation of dry matter in grain of two varieties all showed "S" type,the grain filling rate showed unimodal curve,and the filling rate of N50222 was less than LX987 which results in 1 000-grain weight was lower than LX987.The tillering,earbering tiller percentage and the spike number of N50222 increased with increasing of N;the spike number of LX987 was also increased,and earbering tiller percentage showed a tendency of up then down.Increasing N fertilizer promoted the transfer of dry matter of N50222 from plant stem,leaf and sheath to the kernel,which was different with LX987,the 1 000-grain weight of N50222 and LX987 all showed a tendency of falling.In a range of 0-200 kg/ha,the yield of N50222 was advanced with increasing of N,but the yield of LX987 showed a tendency of up then down.

Key words: Waxy wheat, Nitrogen rate, Growth and development, Yield

CLC Number:

GUO Jun-liang, ZHANG Min, LIU Xi-wei, XU Dong-xu, LÜ Meng, CAI Rui-guo, ZHOU Yin-fu. Comparative Study on the Effect of Nitrogen Rate on Dry Matter Accumulation and Grain Yield Between Waxy and Common Wheat[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2014, 29(S1): 292-298. doi: 10.7668/hbnxb.2014.S1.055.

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