| 郭青云.油菜田遏蓝菜发生规律与化学防除[J].植物保护,2003,29(6):29-32. |
| 油菜田遏蓝菜发生规律与化学防除 |
| Occurrence of Thlaspi arvense L. in rape seed fields and its chemical control |
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| DOI： |
| 中文关键词: 杂草防治 油菜 遏蓝菜 发生规律 化学防除 |
| 英文关键词:weed control rape Thlaspi arvense L. occurrence chemical control |
| 基金项目: |
| 郭青云 |
| 青海省农林科学院植物保护研究所 西宁 |
| 摘要点击次数: 544 |
| 全文下载次数: 1015 |
| 中文摘要: |
| 试验明确,青海湟中地区遏蓝菜全生育期约为115d,出苗高峰期为5月上旬至中旬。种子发芽出苗最适土壤深度为1.0～3.0cm。花期约34d,果期约20d,单株结籽量平均690粒。种子有休眠习性,室外埋入土层8d萌发率为1.5％。遏蓝菜与油菜竞争危害表现在油菜全生育期,植株含氮、磷、钾量比油菜高2.3％～225.0％。遏蓝菜发生量与油菜籽产量呈极显著负相关关系,回归方程为y=203.15-0.53x。采用3种除草剂及其混剂对遏蓝菜的防除效果均在90％以上,油菜籽增产显著。 |
| 英文摘要: |
| In the Huangzhong Areas of Qinghai, the growth period of Thlaspi arvense L. lasted around 115 days, the e-mergence period about 87 days, and the emergence peak was in early to middle May. The best soil depth for emergence was 1.0-3.0 cm. The flowering period lasted about 34 days, fruting period about 20 days, and overage seeds per single plant were 690 grains. There was a seed dormancy. The emergency rate was 1.5% after planting at the depth of 8cm in soil. There was a strong competition of Thlaspi arvense with spring rape seeds during the whole growth periods. The contents of N, P, K of T. arvense were higher by 2.3% - 225.0% than those of spring rape seeds. There was a significant negative correlation between T. arvense and the yields of spring rape seeds. The regression equation was y=203.15-0.53x. The control efficaey was above 90 % by applying 3 kinds of herbicides and their mixtures which increased rape seeds significantly. |
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