Effects of Planting Density on the Growth and Salt Transfer of Suaeda salsa L.under Drip Irrigation Conditions
In order to study the effects of different planting density on the growth and salt transfer of Suaeda salsa L.under drip irrigation,field experiments were conducted in Kashi region of Xinjiang with six planting densities,D1(10 plants/m2),D2(20 plants/m2),D3(30 plants/m2),D4(40 plants/m2),D5(50 plants/m2),D6(60 plants/m2),the aim of this study was to control the plant type of Suaeda salsa by controlling the planting density so as to achieve high yield and high efficiency.The results showed that the growth indicators of Suaeda salsa was significantly affected by planting densities under drip irrigation,with the increase of planting density,the plant height first increased and then decreased,the canopy diameter and stem diameter gradually decreased.The biomass first increased and then decreased with the increase of density,showing a quadratic curve trend.The biomass of D3 treatment was the largest,which increased by 7.45%～63.85%compared with other treatments,meanwhile,and amount of salt transfer of D3 treat-ment was the highest,reaching 5931.21 kg/hm2,which was 12.49%～59.97%higher than other treat-ments.The water production efficiency of D3 and D4 treatments was similar,with 6.31 and 6.14 kg/m3,respectively.The highest water and salt transfer efficiency of D3 treatment was 1.58 kg/m3,followed by D4 treatment with 1.41 kg/m3.In this study,it was found that the yield and salt transfer ability of the plant could be affected by controlling the planting density of Suaeda salsa,adjusting the growth index and opti-mizing the plant type.Under drip irrigation conditions,the thin plant density of 30～40 plants/m2 should be adopted.
Saline soilSuaeda salsaDrip irrigationSalt transfer capacityDensity
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