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矿质营养及生长调节剂对玉米耐冷性及产量的影响 被引量:6

Effects of Mineral Nutrition and Growth Regulator on Cold Tolerance and Yield of Maize
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摘要 NP作种肥以及0.1%Zn^(++),BR(油菜素内酯)浸种均可提高玉米的耐冷性.低温胁迫下,NP、Zn^(++)及BR处理均能降低叶细胞质膜透性,增加叶绿素含量,降低气孔阻力,使光合速率有所提高,单株籽粒产量增加.晚播玉米开花期叶面喷施0.5%PK、20ppmGA_3、0.05%Zn^(++)、1ppmBR皆有缓解低温影响,增加可育粒,减少秕粒和秃尖,以及增加百粒重的作用. Treatments of NP as seed manure and soaking maize seeds with Zn++ (0.1%) , BR (Brassinolide) (1, 0.1, 0.001Ppm) before sowing could increase cold tolerance of the plant. Compared with the control, under cold-stress environment, these treatments could all reduce protoplasmic membrane permeability of leaf cell, also increase the chlorophyll content and decrease stomatic resistance, thus increasing photosynthetic rate and adding kernel yield per plant. Spraying the leaves of late-sowing maize with PK (0.5%) , GA3 (20ppm) , Zn++ (0.05%) and BR (Ippm) at flowering stage could alleviate low temperature effect, raise fertile grains, decrease shrunken grains and the length of barren tip of ear and increase one hundred grains weight.
出处 《华北农学报》 CSCD 北大核心 1990年第4期93-98,共6页 Acta Agriculturae Boreali-Sinica
关键词 玉米 生长调节剂 耐冷性 矿质营养 Maize Cold tolerance Mineral nutrition Growth regulator
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参考文献3

  • 1何洁,刘鸿先,王以柔,郭俊彦.低温与植物的光合作用[J]植物生理学通讯,1986(02). 被引量:1
  • 2山东省农业科学院玉米研究所编著..玉米生理[M].北京:农业出版社,1987:469.
  • 3王洪春编著..生物膜结构功能和渗透调节[M].上海:上海科学技术出版社,1987:122.

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