摘要
为明确不同种植密度对快菜生长,产量以及叶面积指数影响的差异性,为快菜适宜种植密度的选择提供理论依据和实践指导。以京研快菜6号为研究对象,设置666672,500000,444438,333328株/hm24个密度水平,研究不同种植密度对快菜株高、茎粗、开展度、叶片数、单株质量、产量及叶面积指数的影响。结果表明,各种植密度下快菜的生长、产量和叶面积指数等指标在经过播种后21 d的缓慢增长期后极速增长,在播种36 d时到达峰值,其中,种植密度为444438株/hm^2的峰值最高,相比于处理666672株/hm^2,其株高、茎粗、开展度、叶片数分别提高了5.26%,50.19%,29.77%,30.00%,其单株质量、产量、单株叶面积、叶面积指数分别提高了137.56%,11.64%,100.50%,33.67%。相关分析表明,种植密度与单株质量、产量、叶面积指数呈回归方程为抛物线型的曲线相关,在峰值处存在较合理的种植密度,较适宜的叶面积指数为9.21~11.43。综合各密度处理下的快菜生长情况和产量,京研快菜6号种植密度在444438株/hm^2时较为合理。
In order to explore the difference of different planting density on the growth,yield and leaf area index of Seedling-edible Chinese cabbage,and to provide theoretical basis and practical guidance for a rational planting density on this vegetable,the effect of planting density on Jingyankuaicai No.6,which was a variety of seedling-edible Chinese cabbage,were studied on plant height,stem diameter,plant expansion,leaf number,single plant weight,yield and leaf area index,and four density levels were designed,i.e.666672,500000,444438,333328 plants/ha,providing theoretical basis and practical guidance for a rational planting density on this vegetable.The results showed that the growth,yield and leaf area index in each planting density increased slowly during 21 days after sowing,then increased significantly and reached the peak at 36 days after sowing.Among the planting densities,444438 plants/ha showed the best result.Compared with the treatment of 666672 plants/ha on this peak,the plant height,stem diameter,plant expansion and leaf number were increased by 5.26%,50.19%,29.77%and 30.00%,respectively.And the weight,yield,single plant leaf area and leaf area index were increased by 137.56%,11.64%,100.50%and 33.67%,respectively.Correlation analysis showed that the relationship between planting density and single plant weight,yield and leaf area index present a parabolic regression equation.There was a reasonable planting density at the peak,and the suitable leaf area index ranged from 9.21 to 11.43.Based on the growth and yield of this vegetable under various density treatments,the rational planting density of Jingyankuaicai No.6 was at 444438 plants/ha.
作者
付炳堃
刘天丽
孙梦遥
曹之富
王倩
FU Bingkun;LIU Tianli;SUN Mengyao;CAO Zhifu;WANG Qian(College of Horticulture,China Agricultural University,Beijing Key Laboratory of Growth and Development Regulation for Protected Vegetable Crops,Beijing 100193,China;Beijing Agricultural Machinery Experiment Appraisal Popularize Station,Beijing 100079,China;Beijing Agricultural Technology Extension Station,Beijing 100029,China)
出处
《华北农学报》
CSCD
北大核心
2019年第S01期119-123,共5页
Acta Agriculturae Boreali-Sinica
基金
现代农业产业技术体系北京市叶类蔬菜创新团队(BAIC07-2018)
关键词
快菜
种植密度
单株质量
产量
叶面积指数
Seedling-edible Chinese cabbage
Plant density
Single plant weight
Yield
Leaf area index
