云南双江县植烟土壤养分丰缺评价OA

In order to understand the abundance and deficiency of soil nutrients in the Shuangjiang tobacco planting area.In 2021,soil nutri-ent surveys were conducted in five major tobacco planting townships in Shahe Township,Mengmeng Township,Bangbing Township,Dawen Township and Mangnuo Township,and a total of 49 soil samples were collected.Soil nutrient content was analyzed and evaluated by testing.The results showed that the soil in the tobacco planting area of Shuangjiang County was acidic and slightly acidic,with an average pH of 5.28,of which acidic soil accounted for 77.55%of the county.The content of soil organic matter and hydrolyzed nitrogen was medium,the content of available phosphorus and available potassium was high,the content of exchange magnesium and available zinc in soil was widely distributed,the content of available boron was moderately low,and the content of water-soluble chloride ions was very low.