| 赵振勇,田长彦,马英杰,吕昭智,王平.高密度种植下棉花群体质量主要指标研究[J].干旱地区农业研究,2004,(3):9~13 |
| 高密度种植下棉花群体质量主要指标研究 |
| Study on central indexes of colony quality of cotton under high planting density |
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| DOI：10.7606/j.issn.1000-7601.2004.03.03 |
| 中文关键词: 棉花 高种植密度 高肥力 群体质量 |
| 英文关键词:cotton high planting density high fertility colony quality |
| 基金项目:中国科学院知识创新项目(KZCX1-08)；中国科学院农业项目(NB十五E-02) |
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| 中文摘要: |
| 在塔里木盆地东北缘的尉犁县,在相同的气候、土壤质地、肥水条件下,对18×104株/hm2,22.5×104株/hm2,27×104株/hm2三种高种植密度下棉花群体质量进行研究。结果显示,在密度为18×104株/hm2的基础上继续扩大密度,单位面积皮棉产量下降,三种栽培密度下以18×104株/hm2的棉花群体质量主要指标单位面积总铃数、铃重、结铃率、干物质累积、叶面积系数最优。试验结果证明,现行常规管理模式下,塔里木盆地东北缘棉区,高肥力棉田棉花种植密度不应超过18×104株/hm2。 |
| 英文摘要: |
| Colony quality of cotton under high planting density of 18×104 plants/hm2,22.5×104 plants/hm2 and 27×104 plants/hm2 was studied with the same climate, soil texture, fertility and water conditions in Yuli county in Xinjiang. The results showed that the lint yield of cotton decreased with the density increased. The main indexes of colony quality such as bolls quantity of unit area, weight of single boll, boll setting rate, dry matter accumulation and leaf area index were optimal under the density of 18×104 plants/hm2. The results proved that the density of cotton could not be exceeded 18×104 plants/hm2 in the high-fertility fields at northeastern border of Tarim Basin under current cultivating conditions. |
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