| Response of planting density of winter rapeseed to different ecological condition in north drought and cold region |
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| DOI：10.7606/j.issn.1000-7601.2012.05.09 |
| Key Words: winter rape suitable planting densities north drought and cold region |
| Author Name | Affiliation | | FANG Yan | Instrumental Research and Analysis Center of Gansu Agricultural University, Lanzhou, Gansu 730070, China
Gansu Provincial Key Lab of Arid Land Crop Science, Lanzhou, Gansu 730070, China | | SUN Wancang | Gansu Provincial Key Lab of Arid Land Crop Science, Lanzhou, Gansu 730070, China | | LI Qiang | Institute of Industrial Crops， Xinjiang Academy of Agricultural Sciences, Urumqi, Xinjiang 830091, China | | ZHOU Jihong | Beijing Agro-Technical Extension Centre, Beijing 100101, China | | YE Jian | Gansu Provincial Key Lab of Arid Land Crop Science, Lanzhou, Gansu 730070, China | | YANG Renyi | Jiuquan Institute of Agriculture, Jiuquan, Gansu 735000, China | | WU Junyan | Gansu Provincial Key Lab of Arid Land Crop Science, Lanzhou, Gansu 730070, China |
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| Abstract: |
| The suitable planting density of winter rapeseed was studied in north drought and cold region. The effect of planting density on winter-survival rate, growth period, yield, and agriculture character were discussed. The results showed that the winter-survival rate was decreased with the increase of planting density. The planting densities also had some effect on the growth period. As the planting density increased, the location of the branch raised, but the plant height, total branches, length of main inflorescence, 1000-seed weight and yield per plant all declined. Seeds per silique showed a parabolic curve with increase of planting density. The suitable planting density in Xinjiang, Jiuquan, Jingyuan and Beijing was 6×105～1.2×106 plants/hm2, 6×105～7.5×105 plants/hm2, 6×105～9×105 plants/hm2 and 6×105～9×105 plants/hm2, respectively. In conclusion, the suitable planting density in north drought and cold region was 6×105～9×105 plants/hm2. |
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