| Plant characters and yield of rape with different planting density under ridge film mulching and furrow seeding |
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| DOI：10.7606/j.issn.1000-7601.2012.02.22 |
| Key Words: rape ridge film mulching and furrow seeding density plant form physiological characters yield |
| Author Name | Affiliation | | ZHANG Dongyu | Zhangye Cash Crop Technique Popularization Station, Zhangye, Gansu 735000, China | | ZHAO Dongxia | College of Agronomy, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | NIU Junyi | College of Agronomy, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | YAN Zhili | Hebei Normal University of Science & Technology, Qinhuangdao, Hebei 066004, China | | ZHANG Yanming | College of Agronomy, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | YU Xingfang | College of Agronomy, Gansu Agricultural University, Lanzhou, Gansu 730070, China |
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| Abstract: |
| In order to improve the technical system of ridge film mulching and furrow seeding for rape, an experiment was conducted to compare rape plant morphological and physiological characters and yield under different density. The result showed that thin planting was beneficial to part of character parameters and finally increased per plant yield, but the amount of dissimilarity among treatments decreased gradually with the growing time. The expression of number of branch, leaf area and part of physiological characters of rape under appropriate density were all superior to that of low or high density. Grey correlative degree on density to per unit yield was higher than that of density to per plant yield. In dry mountainous areas of western China, it is recommended to plant at 45 000/666.7m2 under ridge film mulching and furrow seeding, which may achieve 39% higher output than the existing local planting density of 30 000/666.7m2. |
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