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中国农学通报

中国农学通报 ›› 2009, Vol. 25 ›› Issue (17): 93-97.

所属专题： 棉花； 园艺

• 农学 农业基础科学 • 上一篇    下一篇

扁桃棉花间作对棉花产量及影响因素的研究

杨 波1,龚 鹏1,车玉红2,张 平1,徐叶挺1,杨 磊1   

  • 收稿日期:2009-04-02 修回日期:2009-04-19 出版日期:2009-09-05 发布日期:2009-09-05

Study on almond and cotton intercroppingto yield and influence factor of cotton

Yang Bo1, Gong Peng1, Che Yuhong2, Zhang Ping1, Xu Yeting1, Yang Lei1   

  • Received:2009-04-02 Revised:2009-04-19 Online:2009-09-05 Published:2009-09-05

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摘要：

摘要：以大田棉花为对照（CK），与20年生扁桃树下间作棉花的光合特性、产量及土壤养分进行比较研究，结果表明：①扁棉间作对棉花的产量影响很大，主要表现在间作减少了亩株数、亩铃数和单株成铃数，进而影响到了子棉和皮棉的亩产，扁桃树树冠内侧、树冠外侧2米处的子棉平均亩产分别较对照递减了66.92%和42.78%。②扁棉间作改变了棉花光合特性的日变化规律，对照棉花的光合作用的日变化规律都呈双峰曲线，而间作棉花的变化规律都呈单峰曲线，峰值出现时间早晚与树影变化长度和方向有关。③扁棉间作降低了距离树干5米处（垂直树冠外围附近）土壤水解性氮、有效磷、速效钾、有机质的含量，而对其它各处土壤养分含量的影响不大。说明扁棉间作系统中光合作用是决定棉花产量的最重要因素。

关键词: PRRSV, PRRSV, CSFV, PCV-Ⅱ, 混合感染, 调查

Abstract:

Abstract: In field of cotton as CK, with the 20-year-old almond tree intercropping cotton of the photosynthetic characteristics yield and soil nutrient a comparative study, results showed that: ①almond and cotton intercropping cotton yield great influence mainly reflected in the decrease of Harvest lants、 Harvest bolls and Total bolls, thereby affecting the Seed cotton yield and lint yield, Inside of crown almond , Tow meter outside of crown almond of the Seed cotton yield were contrasted respectively comparatively having decreased 66.92% and 42.78% by degrees.②almond and cotton intercropping cotton changed the photosynthetic characteristics of diurnal variation, the control of cotton diurnal variation of photosynthesis both bimodal curve, and the changes of cotton intercropping both single peak curve, the peak times of change sooner or later, with the shadows on the length and direction.③hydrolysis of nitrogen,effective phosphorus,potassium,organic matter were declined in witch the place that have five metres distance the trunk of soil. Detemined cotton yield of fatal factor was almond and cotton intercropping cotton of photosynthetic characteristics.