&nbsp;Effects of Layered Bottom Application of Slow-release Fertilizer on
 Growth，Dry Matter Accumulation and Yield of Summer Maize

GONG Yu, DUAN Weiwei, WANG Guiyan, CHEN Zongpei, CEHN Zhaoyue, XUE Jiaxin, LI Ben

doi:10.15933/j.cnki.1004-3268.2019.10.007

Journal of Henan Agricultural Sciences >

2019 , Vol. 48 >Issue 10: 41 - 46

DOI: https://doi.org/10.15933/j.cnki.1004-3268.2019.10.007

Crop Cultivation & Genetic Breeding

Effects of Layered Bottom Application of Slow-release Fertilizer on Growth，Dry Matter Accumulation and Yield of Summer Maize

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(College of Agronomy/Key Laboratory of Crop Growth Ｒegulation of Hebei Province,Hebei Agricultural University,Baoding 071000，China)

Received date: 2019-02-01

Online published: 2019-10-15

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Abstract

This study is to find out the effect of the layered bottom application mode of slow-release fertilizer,and provide theoretical basis for the popularization and application of corn simplified fertilization technology.The corn variety Xinrui 25 was used as the experimental material，and the random block design was adopted.The slow-release fertilizer layered(0—15,15—30 cm soil layer) bottom application mode(M1),common fertilizer bottom application mode(M2) and common fertilizer bottom application and topdressing mode (M3) three treatments were set.The results showed that summer maize of M2 mode had high population growth rate and net assimilation rate at the early growth stage，while summer maize of M1 and M3 modes had higher population growth rate and net assimilation rate during the middle and later growth period.The population growth rate and net assimilation rate of M1 mode were significantly higher than those of other fertilizing modes from grain-filling stage to maturity.The dry matter accumulation of M1 mode were significantly higher than that of M2 and M3 modes after tasseling.The dry matter transfer rate and contribution rate of vegetative organs to grain of M2 mode were the highest,which of M1 mode were similar to the M3 mode.There was no significant difference in the grain number per spike and yield between M1 and M3 modes,but they were significantly higher than that of M2 mode.The yield of summer maize in M1 mode was 13.9% and 5.2% higher than that of M2 and M3 modes respectively.The results indicated that the layered fertilization mode could promote the growth and development and improve the accumulation of dry matter at the later stage of summer maize,moreover,it could increase the yield by improving the number of kernels per ear．

Key words： Summer maize; Slow-release fertilizer; Layered fertilization; Growth and development; Dry matter; Yield

Cite this article

GONG Yu, DUAN Weiwei, WANG Guiyan, CHEN Zongpei, CEHN Zhaoyue, XUE Jiaxin, LI Ben . Effects of Layered Bottom Application of Slow-release Fertilizer on Growth，Dry Matter Accumulation and Yield of Summer Maize[J]. Journal of Henan Agricultural Sciences, 2019 , 48(10) : 41 -46 . DOI: 10.15933/j.cnki.1004-3268.2019.10.007

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