Effect of N Fertilizer Application on Biological and Economic Characteristics of Hybrid Cotton Variety Yankangza No .1
WANG Yong-he
SUN Jin
Abstract：Hybrid cotton(Gossypium spp .L .cv .Yankangza No .1) with early maturity ,high yield , disease resistance ,and good properties of fiber quality ,is currently the main variety planted in coastal areas of Jiangsu .Field trial results showed that with the application of phosphorus ,potas-sium ,and boron fertilizer ,the yield increasing effect was not obvious for Yankangza No .1 without N fertilizer .Within the N range of 0 to 412 .5 kg/ha ,cotton bolls per plant and yield increased with an in-crease in nitrogen application .But when nitrogen application exceeded 412 .5 kg/ha ,the bolls per plant and yield decreased with the increasing nitrogen .The ratio of yield interest to application cost increased with an increase of N application in the range of 0 to 330 kg/ha .Over the range ,the ratio decreased . Therefore ,the maximum yield application rate of nitrogen is 412 .5 kg/ha ,and the optimum application rate of nitrogen is 330 kg/ha for Yankangza No .1 in the Yanchao soil with medium fertility .
Keywords：N fertilizer applicationcottonYankangza No .1biological characteristicseconomic characteristics
Publication Date：2013-12-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：3( 40-42 )