Effects of Different Densities and Fertilization Levels on Yield and Its Components of Yundamai No.14
QIAO Xiangmei
WANG Zhilong
LIU Lie
WANG Zhiwei
HUANG Tingzhi
CHENG Geng
CHENG Jiasheng
Abstract：In order to explore the effect of different densities and fertilization levels on the yield and its components of Yundamai No.14,we set up three density gradients(A1:1.95 million plants/hm2,A2:2.25 million plants/hm2,A3:2.55 million plants/hm2)and 6 fertilization levels(B1:no fertilization,B2:150 kg/hm2 urea,B3:3 000 kg/hm2 farmyard manure,B4:75 kg/hm2 urea+1 800 kg/hm2 farmyard manure,B5:45 kg/hm2 urea+2 400 kg/hm2 farmyard manure,B6:105 kg/hm2 urea+1 200 kg/hm2 farmyard manure),and determined the yield and component factors during maturity.The results showed that planting density,fertilization level,and their interaction had highly significant effects on the yield,spike number per unit area and the thou sand-grain weight of Yundamai No.14.The yield and spike number per unit area increased with the increase of density,and grains per spike were insensitive to fertilization treatment.The optimal combination for yield under different density and fertilization treatments was A3B6,followed by A2B3,with no significant difference between the two.The combination with the highest economic benefit was also A3B6,followed by A1B2.Therefore,under the experimental conditions,Yundamai No.14 achieved optimal yield and economic benefits when cultivated at a planting density of 2.55 million plants per hectare,combined with a fertilization level of 105 kg/hm2 urea and 1 200 kg/hm2 farmyard manure.
Keywords：Yundamai No.14DensityFertilization levelYieldYield components
Publication Date：2025-04-28
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 43-47 )