山东农业科学2012，Vol.44Issue(10)：70-75,6.
硫包膜控释尿素和树脂包膜控释尿素混施对番茄生长及氮代谢酶活性的影响
Effects of Mixed Application of Sulfur-coated and Resin-coated Controlled Release Urea Fertilizer on Growth and Nitrogen Metabolism-related Enzyme Activities of Tomato
摘要
Abstract
In the condition of pot planting in greenhouse, the mixed application of sulfur - coated (SCU, controlled release period as four months) and resin — coated ( RCU, controlled release period as six months) controlled release urea fertilizer with each providing 50% nitrogen respecetively was studied, and its effects under the same nitrogen, 30% and 50% nitrogen reduced level on the growth, photosynthetic rate and nitrogen metabolism - related enzyme activities of tomato were compared with urea. The results showed that in all sampling periods, the content of Chla, Chlb and Car, Pn, as well as the activity of NR, GS and GOGAT decreased with the reduction of nitrogen amount, following with the decrease of tomato plant height and stem di-ameter. Under the same nitrogen level, the activities of NR, GS and GOGAT of SCU and RCU treatment were lower than those of urea treatment after planted for 30 days, while there were no significant differences in the content of Chla,Chlb,Car and Pn. After planted for 60 and 90 days, all the indexes of SCU and RCU treatment were higher than those of urea treatment. Besides, after planted for 60 days and under 30% nitrogen reduced level, the contents of Chla, Chlb and Car, Pn, as well as the activities of NR, GS and GOGAT of SCU and RCU treatments had no significant difference with those of 100% urea treatment, and the tomato plant height and stem grew well. In summary, the nutrient release rules of SCU and RCU controlled - release fertilizer was consistent with tomato requirement rules in the late of tomato growth, which promoted the synthesis of photosynthetic pigments and nitrogen metabolism -related enzyme activities, delayed leaf senescence and had much help for the formation of tomato production.关键词
番茄/硫包膜控释尿素和树脂包膜控释尿素混施/光合特性/氮代谢相关酶Key words
Tomato/Sulfur - coated and resin - coated controlled release urea/Photosynthesis characteristics/Nitrogen metabolism - related enzymes分类
农业科技引用本文复制引用
丁坤,王秀峰,杨凤娟,张民,魏珉,史庆华..硫包膜控释尿素和树脂包膜控释尿素混施对番茄生长及氮代谢酶活性的影响[J].山东农业科学,2012,44(10):70-75,6.基金项目
"十二五"国家科技支撑计划(2011BAD11B01 （）
2011BAD11B02 （）
2011BAD12B04)和博士后基金(76242)资助. （76242）
