石灰与腐植酸钾配施对新平整土地烤烟产量和品质的影响

Effects of Application of Lime and Potassium Humate on Flue-cured Tobacco Yield and Quality on Newly Recovered Lands

采用石灰和腐植酸钾对新平整烟田进行土壤改良田间试验,研究了2种改良剂与化肥配施对烤烟养分吸收、产量、品质等方面的影响。结果表明:化肥可显著提高土壤速效养分,保证烤烟正常生长;石灰明显改善土壤p H,提高烤烟产量;腐殖酸钾显著提高土壤有机质,提升烤烟品质。化肥、石灰、腐殖酸钾配施可以有效缓解土壤酸害,提高土壤有机质和速效养分含量,促进烤烟的养分吸收、提高上中等烟率和产量、产值,协调烟叶化学成分,增加烟叶香气量,提高烤烟品质。因此,新平整植烟土壤上宜采用化肥配施石灰和腐植酸钾,以初步达到烤烟高产和优质的目的。推荐配施石灰和腐植酸钾的施用量分别为2250、800 kg/hm2。

A field experiment was conducted to study the effects of application of lime and potassium humate （HA-K） as soil modifiers in combination with chemical fertilizers on the uptake of nutrient and yield and quality of flue-cured tobacco in tobacco cultivation of newly re- oovered tobaeoo lands. The results showed that fertilizer was helpful to increase soil available nutrients and ensure the yield of tobeeeo; Lime oould improve soil pH and inerense the yield obviously; HA-K could be useful to increase soil organle matter and improve quality of flue- cured tobacco significantly. In additlon, application of chemical fertilizers in combination with lime and HA-K could effectively alleviate the damage of soil acid, improve soll fertility, increase the uptake of N, P and K, promote the rate of first-class and medium tobacco, the yield and economic values, and increase tobacco aroma and coordinate leaf chemical oomponents to improve the quality of flue-cured tobacco. Therefore, chemical fertilizer plus lime and HA-K was suitable for newly recovered lands to achieve high yield and quality of flue-cured to- bacco preliminarily. The application reoommended the amount of lime and HA-K was 2250 and 1125 kg/hm2 , respectively.