【摘要】 通过在田间烤烟团棵期喷施不同浓度的硼砂,研究了硼肥对烤烟农艺性状和经济性状的影响,结果表明:在浏阳地区,通过喷施900~1500g/hm2纯度为95%的硼砂,对烤烟打顶后的叶宽、叶长、叶面积以及产量没有明显影响,但显著地提高了烤烟产值、上等烟比例、均价,增加烤烟产值1189.5~4095.0元/hm2,提高上等烟12.8~15.5个百分点,降低下等烟10.8~16.3个百分点,提高均价0.98~1.49元/kg。但过高的硼肥喷施,反而不利于经济性状的改善,最佳的硼肥喷施用量为喷施硼砂1200g/hm2。更多还原

【Abstract】 In Liuyang of Hunan,with the field trials,the effect of B on agronomical character and economic of flue-cured tobacco were studied.The results showed that B didnt influence the leaf width,leaf long,leaf area and yield,but had significant effect on grade composition,production value and average price.With 900～1500 g/hm2 Borax being sprayed at rosette stage,production value,average price and upper grade tobacco leaf were respectively increased by 1189.5～4095.0 yuan/hm2,0.98～1.49 yuan/kg and 12.8～15.5 percentage points,and lower grade tobacco leaf was decreased by 10.8～16.3 percentage points.更多还原