不同播种期对烤烟生长、质量和经济效益的影响

Effect of Different Sowing Dates on Growth, Quality and Economic Benefits of Flue-Cured Tobacco

摘要: 本文研究不同播种期对烤烟生长、质量和经济效益的影响。结果表明，在试验条件下，提前播种能缩短田间生育期，田间病害较少，烤后烟叶下部叶较重，整体烟叶外观质量较好，但产值低；12月5日播种，单叶重最大，产值居中，烟叶化学成分协调性较差，病害较重；推迟播种，当苗龄为65天左右时，烟叶早生快发明显，烟株农艺性状较好，烤后上部叶较重，整体经济效益最好，氮碱比较好，化学成分较协调。

Abstract: Effects of different sowing dates on growth, quality and economic benefit of flue-cured tobacco were studied in the paper. The results showed that under the test conditions early sowing could shorten the growth period, the main diseases in tobacco field were light, the lug leaves of flue-cured tobacco were heavier, the overall appearance quality of flue-cured tobacco leaves was better, but the output value was low. Sowing on December 5, the single leaf weight was largest, the output value was in the middle, the coordination of chemical components was poor and the main diseases in tobacco field were serious. When the seedling age was 65 days, the early growth and rapid development of flue-cured tobacco were obvious, agronomic traits of tobacco plants were better, the upper leaves were heavier after curing, the overall economic benefits were the best, the ratio of nitrogen to alkali was better, and the chemical components were coordinated.