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结合新疆地区冬油菜生长情况,研究了不同密度条件下冬油菜越冬率及叶面积和叶面积指数、鲜重净增量、单位面积干物质积累量、经济性状及产量、含油量。结果表明,密度对冬油菜越冬率、叶面积和叶面积指数、鲜重净增量、单位面积干物质积累量及产量和经济性状、含油量有着显著影响。30、60、90、120、150万株/hm2五个密度处理,低密度处理30万株/hm2叶面积较高,高密度处理150万株/hm2(CK)叶面积指数相对较高,而越冬率、鲜重净增量、单位面积干物质积累量、产量、经济性状和含油量均以90万株/hm2处理最高。适宜的密度水平能提高冬油菜越冬率和最终的产量、含油量。试验结论:在新疆地区冬油菜适宜密度在60~90万株/hm2。
According to the growth of winter rapeseed in Xinjiang, the overwintering rate, leaf area, leaf area index, net fresh weight increment, dry matter accumulation per unit area, economic traits and yield, oil content of winter rape were studied under different densities. The results showed that density had a significant effect on overwintering rate, leaf area and leaf area index, net fresh weight increment, dry matter accumulation per unit area, yield, economic traits and oil content of winter rape. 30,60,90,120,1,500,000 plants / hm2 density, 300,000 plants / hm2 in low-density treatment had higher leaf area, and 1.5 million plants / hm2 in high-density treatment had relatively higher leaf area index Overwintering rate, net fresh weight increment, dry matter accumulation per unit area, yield, economic traits and oil content were highest at 900,000 plants / hm2. Appropriate density levels can increase winter rape overwintering rate and the final output, oil content. Experimental conclusion: The suitable density of winter rape in Xinjiang is between 60 and 900 000 plants / hm2.