新疆农业科学2018，Vol.55Issue(4)：635-646,12.DOI:10.6048/j.issn.1001-4330.2018.04.006
不同灌溉量下氮肥施用时期对甜菜光合物质生产及产量的补偿作用
The Compensatory Effect of Nitrogen Fertilizer Application Period on the Photosynthetic Substances Production and Yield of Sugar Beet under Different Irrigation Amounts
摘要
Abstract
[Objective] The purpose of this project is to study the effects of nitrogen fertilizer application period on sugar beet net photosynthetic rate (Pn), transpiration rate (Er), dry matter accumulation, yield and quality, irrigation water use efficiency, nitrogen use efficiency and fertilizer partial productivity under dif-ferent irrigation amount in order to provide scientific theoretical basis for the efficient use of water and fertilizer of sugar beet in arid area.[Method]The design of split plot experiment was adopted in the test. Two irrigation quotas were used in the main area and five nitrogen application periods were used in the deputy area. The total amount of pure nitrogen was the same as 120 kg/hm2.[Result]Under the same nitrogen fertilizer application period treatment, with the decrease of irrigation amount, the Pn, the Er, the stem and leaf dry weight, the root dry weight, the total dry weight, the root weight, the yield and sugar yield ( except N4 treatment) and ni-trogen partial factor productivity were decreased, the sugar content, the yield increase rate, the irrigation wa-ter use efficiency and the agronomic nitrogen use efficiency were improved in sugar beet. Under the same irri-gation amount treatment, with the postponing of nitrogen fertilizer application period, the above indexes in-creased first and then decreased, and the optimal compensation index was N4 treatment. Compared with 5,850 m3/hm2 irrigation quota, the compensation index for peak value of each index of beet under 4,650 m3/hm2 irrigation quota was increased by -1. 6% -27. 5% .[Conclusion]The reasonable water and nitrogen management mode in the sugarbeet production area of Northern Xinjiang was as follows: irrigation quota 4650 m3/hm2, nitrogen fertilizer base application 1 or 2 times in mid-July.关键词
甜菜/灌溉量/氮肥施用时期/光合物质生产/产量Key words
sugar beet/irrigation amount/nitrogen fertilizer application period/photosynthetic sub-stances production/yield分类
农业科技引用本文复制引用
董心久,杨洪泽,周建朝,高卫时,张立明,李思忠,石洪亮,刘军..不同灌溉量下氮肥施用时期对甜菜光合物质生产及产量的补偿作用[J].新疆农业科学,2018,55(4):635-646,12.基金项目
国家现代农业产业技术体系(糖料)建设专项资金(CARS-17) （糖料）
新疆农业科学科院青年基金项目(xjnkq-2015016)National Modern Agriculutre Industry Technology System(Sugar),(CARS-17) （xjnkq-2015016）
Youth Fund Project of Xinjiang Academy of Agri-cultural Sciences,(xjnky-2015016) （xjnky-2015016）
