| 施氮量对空心多茎株型短季棉的效应 |
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| 引用本文： | 柴卫东,刘永平,李洪芹,席国成,孙玉英,刘贞贞,吴汝敏.施氮量对空心多茎株型短季棉的效应[J].邯郸农业高等专科学校学报,2003,20(1):1-5. |
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| 作者姓名： | 柴卫东 刘永平 李洪芹 席国成 孙玉英 刘贞贞 吴汝敏 |
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| 作者单位： | 1. 河北省沧州市农林科学院,沧州,061001
2. 邯郸市农业区划办公室,邯郸,056001 |
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| 基金项目： | 国家“九五”科技攻关子专题 (96 - 0 0 4 - 0 1- 0 4 - 0 2 )，河北省“九五”科技攻关子专题 (96 2 2 0 915D - 0 2 )部分研究内容 |
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| 摘 要： | 空心多茎株型是作者首创的短季棉高光效株型 ,它克服了短季棉的自身生理缺陷 ,显著提高了短季棉的产量和品质。本文探讨了施氮量对其产量和主要生育性状的影响。从实际产量看 ,75 .0kg·hm- 2 纯氮即能显著提高空心多茎株型的皮棉产量 ,施氮利润也稳定较高 ,继续增施氮肥 ,皮棉产量不再有明显变化 ;从回归分析看 ,施氮量对皮棉产量的效应曲线符合开口向下的抛物线模型 ;从产量结构和干物质积累看 ,施氮主要是增加了单铃重和干物质积累量 ,其次是单株成铃 ,而对衣分和经济系数无明显影响 ;从单株功能叶片、叶片鲜干比和叶铃比看 ,它们受施氮量影响最大 ,与干物质积累量和皮棉产量均呈显著正相关关系 ;从单株果节(潜在库量 )看 ,它受施氮量影响中等 ,与干物质积累量和皮棉产量均呈不显著正相关关系。从总的看 ,强源是空心多茎株型施氮增产的主要原因 ,扩库对产量的作用是有限的 ;低氮量即能显著提高空心多茎株型的皮棉产量 ;继续增施氮肥 ,空心多茎株型只对氮素表现出较强的适应性 ,而没能充分发挥其产量潜力 ;产量潜力的发挥需要一整套栽培技术的支撑。
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| 关 键 词： | 施氮量 空心多茎株型 短季棉 产量结构 |
| 修稿时间： | 2002年9月20日 |
Effect of Nitrogenous fertilizer on short - dated top - removed cotton |
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| Chai Weidong,Liu Yongping,Li Hongqin,Xi Guocheng,Sun Yuyeng,Liu Zhenzhen,Wu Rumin.Effect of Nitrogenous fertilizer on short - dated top - removed cotton[J].Journal of Handan Agricultural College,2003,20(1):1-5. |
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| Authors: | Chai Weidong Liu Yongping Li Hongqin Xi Guocheng Sun Yuyeng Liu Zhenzhen Wu Rumin |
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| Abstract: | Top removal planting type of short-dated cotton is photosynthetic,it overcomes the weakness of short-dated cotton,and it made the yield and quality improved remarkably. Effect different nitrogenous fertilizer quantites on yield and main bearing characters, was discussed in the article. According to the yield,75.0kg/hm 2 of nitrogenous fertilizer improved the lint cotton yield obviously, and more nitrogenous fertilizer couldn't bring more change obviously. Regress analysis method was used in the experiments; the relation of nitrogenous fertilizer and lint cotton yield was suit for parabola, which was towards top. The main functions nitrogenous fertilizer were improving the weight of boll and hay substance;secondly, the quantity of bolls per plant with no obvious effect on lint percent and economic coefficiency. Using nitrogenous fertilizer could obviously affect functional leafs, proportion of fresh-leaf-weight versus hay one, and proportion of leaf versus boll; It has remarkable pluscorrlativity between hay substance and lint cotton yield. The quantity of fruit nodes has no obvious change, and it has no remarkable plus correlativity between hay substance and lint cotton yield. In general buildup fountain is the main reason of increasing production, enlarging storeroom is limited to production, a little nitrogenous fertilizer can improve lint cotton yield remarkably,more nitrogenous fertilizer only makes cotton improving its adaptability,but no extra remarkable yield. The yield potential depends on a series of planting techniques. |
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| Keywords: | short-dated cotton top removal plant type :nitrogenous fertilizer:effect |
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