氮形態對油菜苗期生長的影響

崔雪梅 陳莎 章愛群

摘要：為油菜的合理施肥提供依據，以甘藍型油菜中雙8號為對象，通過營養液培養試驗，在同一氮水平下設置5種不同的硝銨比，研究不同氮形態對油菜幼苗株高、根長、鮮重、生物量及葉綠素含量等指標的影響。結果表明，供應兩種形態氮素比單一形態氮素更有利于油菜生長發育以及提高產量；硝銨比75/25的處理生長狀況最好；硝銨比超過75/25時，隨著營養液中NH4+比例升高，幼苗各項指標顯著降低。

關鍵詞：氮形態；銨態氮；硝態氮；油菜

中圖分類號：S565.406.2 文獻標識碼：A 文章編號：0439-8114（2015）13-3101-03

DOI：10.14088/j.cnki.issn0439-8114.2015.13.008

Effects of Nitrogen on Seedling Stage of Rape

CUI Xue-mei，CHEN Sha，ZHANG Ai-qun

（College of Life Science and Technology/Laboratory of Quality Control of Characteristic Fruits and Vegetables，

Hubei Engineering University， Xiaogan 432000， Hubei，China）

Abstract： To provide theoretical basis for the rational application of fertilizer on rape， taking the pair of 8th in Brassica napus as the abject， culture experiments were conducted from the nutrient solution. 5 different ratios of ammonium nitrate in the same nitrogen levels were set. The impact of rape seedling height， root length， fresh weight， biomass， chlorophyll and other indicators from different nitrogen forms was studied. The results showed that supplying two kinds of nitrogen was better than single nitrogen in rape growth and productivity. The growth conditions was best as the ammonium nitrate was 75/25. When the ammonium nitrate surpassed 75/25， each seedling index decreased significantly as the NH4+ rise in the proportion.

Key words： nitrogen shape； ammonium condition nitrogen； tanner state nitrogen； rape

收稿日期：2015-02-26

基金項目：國家自然科學基金項目（71473072）；湖北省中青年人才項目（Q20152702）；特色果蔬質量安全控制湖北省重點實驗室項目（2014K12）

作者簡介：崔雪梅（1979-），女，云南宣威人，碩士，主要從事生態環境及智能預測等研究，（電話）13607295481（電子信箱）swaucxm@126.com。