馮時欽+粟曉萬+黃勇+吳昌源+張華



摘要:【目的】試探幾種蔬菜富硒效果,為富硒蔬菜生產提供參考依據。【方法】以本地區域日常食用的幾種蔬菜為材料,采用根外追肥——葉面噴施的方式,進行不同水平的硒肥試驗。【結果】所有噴施硒肥處理的蔬菜植株硒含量均比對照有不同程度的提高,提高倍數為8至32倍之間;用“康熙寶30ml/4kg、40ml/4kg噴兩次或用“有機硒素200g/60kg噴一次都能生產富硒蔬菜,效果比較明顯。【結論】添加外源硒肥“康熙寶或“有機硒素可以有效地改善蔬菜的品質、提高蔬菜有機硒的含量,生產出富硒蔬菜。
關鍵詞:蔬菜;葉面噴施;硒肥;效果
中圖分類號:S63文獻標識碼:A文章編號:1003-4374(2017)02-0014-04
Abstract:【Objective】Conduct the trial of vegetable cultivation by different levels of selenium fertilization, provide a reference basis for selenium-rich vegetables production.【Method】Applying the material of several kinds of vegetables daily consumption in local area, adopt the way of top dressing-spraying on the leaf, the trial of different levels of selenium fertilization was carried out.【Results】he selenium content of all vegetables spraying selenium fertilizer has improved in different levels compared with control group, the ratio improvement are between 8 to 32 times;spray twice of “Kang Xibao 30 ml/4 kg, 40 ml/4 kg or spray once of the “organic selenium element 200 g/60 kg can produce selenium-rich vegetables with obvious effect.【Conclusion】Adding exogenous selenium fertilizer “Kang Xibao or “organic selenium element can effectively improve the quality,organic selenium content of vegetables, produce selenium-rich vegetables.
Key words:Vegetables;spraying on the leaf;selenium fertilizer;effect
硒是人體內的必需微量元素,具有多種生物學功能,如防治克山病、大骨節病、提高肌體免疫力、延緩衰老等[1]。據統計,我國約有72%的縣(市)不同程度缺硒,其中1/3嚴重缺硒,硒攝取不足的人口達3億以上,嚴重影響著人們的生活與健康[2]。在通常情況下,硒在人體內無法自主產生,必須通過食物獲取[3]。近年來很多學者的研究表明,作物可以把土壤中毒性較大的無機硒轉化為毒性較小的有機硒[4],因此普遍認為通過“土壤—作物—人體這一食物鏈來補硒是最安全且有效的方式。有專家指出,科學補硒最經濟實惠的方法就是通過農產品補硒,通過提高谷類、水果、蔬菜等農產品硒的含量來達到人體每日對硒的需求量[6]。
蔬菜在廣大居民的日常生活中占有舉足輕重的地位,是人們日常飲食中的必需品。……