摘要
两种不同含量的速溶硼肥,solubor和宽甸硼砂施用于油菜新品种中双9号、华双3号、中油杂2号和华杂3号的田间试验结果表明,施硼增加油菜苗期、越冬期、初花期干物重,增加株高、主花序长度、分枝数、单株角果数、粒数和粒重,而叶数、根茎粗和千粒重变化不明显;不同施硼菜籽产量平均增加5.7%～20.1%,喷施等量0.075%、0.10%、0.15%硼肥溶液,solubor优于宽甸硼砂,增产率分别为13.3%、18.3%、20.1%和5.7%、9.9%、15.2%;喷施等量有效硼时,两种硼肥的油菜单株粒重及菜籽产量均相近。表明两种硼肥对双低常规油菜与双低杂交油菜均有相似的显著增产效果,其增产率取决于有效硼施用量;在低硼土上,可满足双低油菜产量达2500～2800kg/hm2的硼素需求为每公顷喷施宽甸硼砂5.7kg或solubor硼肥2.85kg。
Two kinds of boron fertilizers, Solubor with efficient boron of 11% and Kuandian Borax with efficient boron of 20.9%, were tested on several new rapeseed （ Brassica napus L. ） cuhivars including Zhongshuang 9, Huashuang 3, Zhongyouza 2 and Huaza 3 in this experiment. The field trials resulted that the boron fertilizers could increase the dry matter in different stages and increase plant height, inflorescence length, branch number, pod number per plant, seed number and seed weight but less influence on leaf number, stem and root width and seed size was found. Yield increased from 5.7 % to 20.1%. Solubor was found to have higher yield than Kuandian Borax when same volume of fertilizer solu- tion with three concentrations as 0.075%, 0.10% and 0.15%. However, seed weight per plant and plot yield were similar when the two kinds of fertilizers were applied in equal quantity of efficient boron. Both fertilizers could increase yields of the conventional and hybrid cultivars with low erucic acid and low glucesinate. For obtaining a rapeseed yield of 2500 - 2800 kg/hm^2, 0.596 kg efficient boron as much as 5.7 kg/hm^2 Kuandian Borax or 2.85 kg/hm^2 Solubor was rec- ommended for the soils of boron deficiency.
出处
《土壤肥料》
CSCD
北大核心
2005年第6期46-49,共4页
Soils and Fertilizers
基金
国家"十五"科技攻关(2001BA507A-06)。
