Characteristics of Dry Matter,Accumulation and Distribution of N and P of Spring Maize in Dense Conditions

doi:10.7668/hbnxb.2016.06.030

Abstract

Abstract: The aim of this study is to investigate characteristics of dry matter and nitrogen(N) and phosphorus(P) nutrient accumulations and distributions of spring maize.In this study,the distribution characteristics of dry matter and nitrogen and phosphorus accumulation of spring maize were studied by using KW2,KWS9384 and JD32 as test materials in 2014-2015.The results showed that per plant dry matter,nitrogen and phosphorus accumulation of the KW2 respectively for 432.95,4.90,5.21 g in growth period,were significantly higher than the KWS9384 and JD32,compared with the KWS9384,the dry matter and N and P nutrient accumulation amounts of KW2 increased by 15.11%,11.36% and 10.15%,respectively.Compared with the JD32,the dry matter and N and P nutrient accumulation amounts of KW2 increased by 17.55%,27.94% and 28.96%,respectively.The KW2 grain yield and whole plant dry matter and N and P,nutrient accumulation were higher than the KWS9384 and JD32 in the whole growth period,harvest index among the three had no significant difference.The KW2 grain and root nitrogen and phosphorus in dry matter (N and P) was higher than KWS9384 and JD32.Comprehensive analysis showed that the KW2 was most suitable in the density 67 500 plant/ha under cultivation of the 3 spring maize varieties.

Key words: Spring maize, Dry matter accumulation, Nitrogen accumulation, Phosphorus accumulation

CLC Number:

S513.01

ZHANG Xiaojuan, ZHENG Minna, GUO Fengqin. Characteristics of Dry Matter,Accumulation and Distribution of N and P of Spring Maize in Dense Conditions[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2016, 31(6): 192-198. doi: 10.7668/hbnxb.2016.06.030.

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http://www.hbnxb.net/EN/Y2016/V31/I6/192

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