种植密度对四川盆地丘陵区移栽油菜农艺性状和产量的影响  

Effects of Different Density to the Agronomic Traits and Yield of Transplanting Rapeseed in the Hilly Area of Sichuan Basin

作　　者：陈红琳[1] 陈尚洪[1] 沈学善[1] 蒋梁材[2] 刘定辉[1] 

机构地区：[1]四川省农业科学院土壤肥料研究所,成都610066 [2]四川省农业科学院,成都610066

出　　处：《中国农学通报》2012年第30期142-145,共4页Chinese Agricultural Science Bulletin

基　　金：国家科技支撑计划"长江上游油菜丰产关键技术集成示范"(2010BAD01B08);四川省财政基因工程"甘蓝型双低杂交油菜新品种选育及高效育种体系研究"(2011JYGC04-013)

摘　　要：为了研究确定四川盆地丘陵区移栽油菜的最佳种植密度,在大田条件下,以‘川油58’为供试品种,研究不同种植密度对四川盆地丘陵区移栽油菜抗逆性、农艺性状及产量的影响。结果表明,随种植密度的增加,植株抗菌核病、抗蚜虫能力和抗倒伏能力呈下降趋势。随种植密度的增加,单株分枝部位升高,单株主花序长、有效分枝总数以及有效分枝角果总数逐渐减少。群体有效分枝总数、有效角果总数以及群体产量随种植密度的增加呈先增加后减少的趋势。种植密度为10.50×104株/hm2时,群体获得最高产量2715.52kg/hm2,当种植密度为8.25×104株/hm2和10.50×104株/hm2时,处理间群体产量差异不显著。因此,在四川盆地丘陵区,移栽油菜的最佳种植密度为8.25×104株/hm2～10.50×104株/hm2。In order to research the optimum density of transplanting rapeseed in the Hilly Area of Sichuan Basin, the effects of different density to the stress resistance, agronomic traits and yield were studied by field experiment under growing field condition. The results showed that, the different density had an influence to the growth of rape. With the increasing planting density, the resistivities of Sclerotinia sclerotiorum, aphid and lodging level were declined. At the same time, the primary branch height raised, the length of main inflorescence, the total branches and total siliques of single were decreased. Both the total branches, total siliques and yield of total amounts were increased first and decreased later with increasing density. When the density was 105000 plants/bin2, it could reach the maximum yield, it was 2715.52 kg/hm^2. The difference between 82500 plants/hm^2 and 105000 plants/hm^2 was not significantly. The optimum density of transporting rapeseed in the Hilly Area of Sichuan Basin was 82500 plants/hm^2 to 105000 plants/hm^2, the resistivities of Sclerotinia sclerotiorum, aphid and lodging level were better.

关 键 词：密度 四川盆地丘陵区 移栽油菜 农艺性状 产量 

分 类 号：S565[农业科学—作物学]