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不同氮形态对草莓植株生长和果实品质的影响
郝福玲,王巧巧,袁玲玲,王宋奇,方芳,方从兵
0
(安徽农业大学园艺学院,合肥 230036)
摘要:
以‘红颜’草莓砂培苗为材料,采用无氮、硝态氮、铵态氮和硝态氮-铵态氮处理,通过对株高、功能叶和不同发育时期果实生理指标的测定,探讨不同氮形态处理对植株生长发育和果实品质特征的影响。结果表明,硝态氮促进植株生长,提高果实品质,成熟果色泽佳,糖酸比为14.58,多酚含量为2.77 %;铵态氮延缓植株生长,但有助于叶片色素合成和果实产量提高,平均单果重可达12.64 g,成熟果可滴定酸含量达1.12 %,多酚含量为0.47 %;硝态氮-铵态氮处理时,植株生长和果实发育较为均衡,平均株高可达32.47 cm,单果重可达11.07 g,成熟果干物质含量和可溶性固形物含量分别为12.12 %和13.10 %,糖酸比为14.22,多酚含量为2.32 % 。在草莓生产中,施用硝态氮有助于果实品质的提高,硝态氮-铵态氮处理对植株生长、果实产量和品质提升均有良好效果。
关键词:  草莓  氮形态  果实品质  植株生长
DOI:10.13610/j.cnki.1672-352x.20180825.018
投稿时间:2017-11-02
基金项目:国家自然科学青年科学基金项目(31601741)和安徽省高等学校自然科学研究重点项目(KJ2016A221)资助。
Effects of different nitrogen forms on plant growth and fruit quality in strawberry
HAO Fuling,WANG Qiaoqiao,YUAN Lingling,WANG Songqi,FANG Fang,FANG Congbing
(School of Horticulture, Anhui Agricultural University, Hefei 230036)
Abstract:
In order to explore the effects of different nitrogen forms on plant growth and fruit quality in strawberry, sand-grown seedlings of cultivar ‘Benihoppe’ were treated by N-deficiency, nitrate, ammonium, and mixture of nitrate and ammonium, and then the plant height, physiological indexes of functional leaf and different development periods of fruits were measured. The results indicated that nitrate could promote plant growth and improve fruit color and quality. The sugar-acid ratio was 14.58, and the polyphenol content was 2.77 % in red-ripening fruits derived from nitrate-treated seedlings. Ammonium was beneficial for the synthesis of leaf pigment and improvement of the fruit yield, but it delayed the plant growth. The average weight of single fruit could reach up to 12.64 g, and the contents of titratable acids and polyphenols were 1.12 % and 0.47 %, respectively, in the experiment of ammonium treatment. Interestingly, the mixture of nitrate and ammonium was more suitable for the plant growth and fruit development compared to the other two nitrogen forms and the N-deficiency, and the average plant height and single fruit weight were 32.47 cm and 11.07 g, respectively. Moreover, the sugar- acid ratio was 14.22, and the contents of dry matters, soluble solids and polyphenols were 12.12 %, 13.10% and 2.32%, respectively, in the red-ripening fruits. Therefore, in strawberry production, application of nitrate will benefit for improving fruit quality, and the mixture of nitrate and ammonium is suitable for the plant growth, fruit yield and quality of strawberry.
Key words:  Fragaria × ananassa Duch  nitrogen forms  fruit quality  plant growth

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