种植密度对新葵18号生长发育及产量品质的影响

【目的】通过研究不同密度下新葵18号的干物质积累、叶面积及叶面积指数、产量和含油率,分析种植密度对新葵18号生长发育及产量品质的影响。【方法】调查不同种植密度下新葵18号的生长数据,计算不同处理的干物质积累、叶面积、叶面积指数和产量,并测定含油率。【结果】种植密度对新葵18号的生长发育有着显著影响,低密度处理(4 000株/667 m2)的单株叶面积较高,高密度处理(5 500株/667 m2)的叶面积指数较高,产量、含油率和单位面积干物质积累方面以处理5 000株/667 m2的值最高。产量随密度的增大而增加,但是密度超过5 000株/667 m2后,产量则表现出减少的趋势。【结论】适宜的种植密度可以调节新葵18号个体发育,最大发挥群体效应,在新疆5 000株/667 m2是新葵18号的适宜种植密度,可以取得较高产量和品质。

Effect of Planting Density on the Growth, Yield Quality of Xinkui No.18

【Objective】By studying the dry matter accumulation,leaf area,leaf area index,yield and oil-content of Xinkui No.18 under different planting density, the effect of planting density on the growth,yield and quality of Xinkui No.18 were analyzed. 【Method】The study was conducted to investigate the growth data of Xinkui No.18 and calculate dry matter accumulation,leaf area,leaf area index and yield under different planting density,then measure its oil-content.【Result】The result showed that planting density has obvious effect on the growth of Xinkui No.18.Low density treatment(4 000 plant/667 m2) has higher single plant leaf area.High density treatment(5 500 plant/667 m2) has higher leaf area index. Treatment 5 000 plants/667 m2 has the highest yield,oil-content and dry matter accumulation per area.With the density increase,yield increased first and then decreased.【Conclusion】Appropriate density could regulate the growth of individual plant of Xinkui No.18.In Xinjiang,5 000 plant/667 m2 is the appropriate planting density,under which high yield and quality could be obtained.