弱光条件下增铵营养对小白菜产量和品质的影响
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国家自然科学基金项目(30270790)资助


Effects of raising ammonium rate in culture solution on yield and quality of pakchoi under low light intensity
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    摘要:

    采用营养液培养、人工模拟弱光的方法,研究了营养液中提高铵态氮供应对小白菜产量和品质的影响。结果表明:(1)与自然光强相比,弱光条件下小白菜产量大幅度降低,全硝营养的小白菜叶片硝酸盐和叶绿素含量分别增加了106%和23.3%,而可溶性糖和可溶性蛋白含量分别降低了7.0%和34%;(2)弱光条件下,与全硝营养相比,营养液中含有15%的铵态氮处理的小白菜增产56.6%,叶片硝酸盐含量下降29%,可溶性蛋白含量增加24%。因此,弱光条件下适当增加铵态氮可以显著提高小白菜产量,改善品质.

    Abstract:

    A hydroponic experiment was carried out to study effects of higher ammonium rate on yield and quality of pakchoi growing under low light intensity. Results show 1) compared with natural light intensity, low light intensity, decreased significantly yield of pakchoi, but contents of nitrate and chlorophyll in the leaves of pakchoi cultured in sole nitrate solution increased by 106% and 23.3%, respectively, while content of soluble sugar and protein decreased by 7.0% and 34%; and 2), under low light intensity, compared with the treatment of sole nitrate nutrition, the treatment of nutrient solution with 15% ammonium had fresh weight and soluble protein content increased by 56.6% and 24%, and nitrate content decreased by 29%. which indicated that properly enhanced ammonium nutrition could improve yield and quality of pakchoi growing under low light intensity.

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丁传雨,张攀伟,何欣,沈其荣,陈巍.弱光条件下增铵营养对小白菜产量和品质的影响[J].土壤学报,2009,46(4):634-639. DOI:10.11766/trxb200801070410 Ding Chuanyu, Zhang Panwei, He Xin, Shen Qirong, Chen Wei. Effects of raising ammonium rate in culture solution on yield and quality of pakchoi under low light intensity[J]. Acta Pedologica Sinica,2009,46(4):634-639.

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