摘要
本研究在调查凉山州植烟土壤速效钾现状的基础上,在不同水平钾含量植烟土壤上进行钾肥施用量梯度试验,以探索适合当地不同钾含量植烟土壤的配套钾肥用量。结果表明:凉山州植烟土壤速效钾空间分布主要表现为西北部高钾、东北部和南部极度缺钾;水稻土作为凉山州最主要的植烟土壤类型,其钾含量平均值最低(77.56 mg/kg)。在低钾植烟土壤中增加钾肥用量可以显著提高烟叶产量和产值;在中钾植烟土壤上,增加钾肥使用量不会显著提升烤后烟叶产量和产值,但减少钾肥施用量会显著降低烟叶产量和产值;在高钾植烟土壤中,钾肥施用量的变化不会显著影响烤后烟叶产量和产值。在低钾植烟土壤上,增施钾肥处理更有利于烟叶品质的提升;在中钾植烟土壤上,增施钾肥的施用量并不会显著改善烟叶品质,但如果减少钾肥施用量会对烟叶品质产生负影响;在高钾肥植烟土壤上,减施钾肥处理的烟叶在各项协调性指标上更接近于优质烟叶的标准。
On the basis of investigating the present situation of available potassium in tobacco planting soil in Liangshan Prefecture,this study conducted a gradient experiment of potassium fertilizer application on tobacco planting soil with different levels of potassium content to explore the suitable matching potassium fertilizer application for local tobacco planting soil.The results showed that the spatial distribution of available potassium in tobacco planting soil in Liangshan Prefecture was mainly characterized by high potassium in the northwest,extreme potassium deficiency in the northeast and south.As the main tobacco planting soil type in Liangshan Prefecture,paddy soil had the lowest average potassium content(77.56 mg/kg).Increasing the amount of potassium fertilizer in low potassium tobacco planting soil could significantly improve tobacco yield and output value;in medium potassium tobacco planting soil,increasing the amount of potassium fertilizer would′t significantly improve tobacco yield and output value,but reducing the amount of potassium fertilizer would significantly reduce tobacco yield and output value;in high potassium tobacco planting soil,the change of potassium fertilizer application rate did not significantly affect tobacco yield and output value.In low potassium tobacco planting soil,increasing the amount of potassium fertilizer was more conducive to improving the quality of tobacco leaves;in medium potassium tobacco planting soil,increasing the amount of potassium fertilizer did not significantly improve tobacco quality,but reducing the amount of potassium fertilizer would have a negative impact on tobacco quality;in high potassium fertilizer soil,the tobacco leaves treated with reducing potassium fertilizer were closer to the standard of high-quality tobacco in terms of various coordination indicators.
作者
张德先
陈娟
况帅
梁辉
ZHANG Dexian;CHEN Juan;KUANG Shuai;LIANG Hui(Huili Branch,Liangshan Tobacco Company,Huili Sichuan 615100;Liangshan Prefecture Company,Sichuan Tobacco Company,Liangshan Sichuan 615000;Institute of Tobacco Research of CAAS,Qingdao Shandong 266101)
出处
《现代农业科技》
2023年第12期23-30,共8页
Modern Agricultural Science and Technology
关键词
速效钾
植烟土壤
钾肥用量
烟叶化学成分
四川凉山
available potassium
tobacco planting soil
amount of potassium fertilizer
chemical composition of tobacco leaf
Liangshan Sichuan
