Effects of Different Planting Density on the Yield and Plant Traits of Linum usitatissimum in Irrigation Areas along the Yellow River
In order to explore the response of the flax yield and plant traits to planting density,so as to screen the suitable planting density of flax in Baiyin irrigation district,Longya 13 flax was used as the test material.Field experiments were conducted to study the effects of different planting densities(6.0 million,7.5 million,9.0 million,10.5 million,12.0 million grains/ha)on flax yield and plant traits.The results showed that with the increase of planting density,the yield,plant height,process length,biomass,seed weight per plant,seed number per fruit and economic coefficient were increased first and then decreased,whereas the number of stems,branches,branch length,fruit layer thickness,fruit number per plant and thousand grain weight were decreased gradually.Moreover,the contribution rate of main stem was increased gradually,while that of branch stem was decreased gradually with the increase of planting density.When the planting density was 7.5 million grains/ha,the highest yield was 2 299.68 kg/ha at the current level of flax production in Baiyin irrigation areas.
Linum usitatissimum L.Planting densityYieldPlant characterIrrigation areas along the Yellow River
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