Effect of Different Selenium Fertilizer Application Methods and Application Periods on Selenium Content and Yield of Rice

• Published in: Journal of agricultural resources and environment Vol. 31; no. 6; p. 560
• Main Authors: Feng-Qin, Chi, En-Jun, Kuang, Zhang Jiu-Ming, Qing-Rui, Su, Wei, Dan
• Format: Journal Article
• Language: Chinese
• Published: Tianjin Journal of Agricultural Resources and Environment (JARE) 01.01.2014
• Subjects: Absorption; Accumulation; Agricultural production; Breeding; Crop yield; Enrichment; Fertilizer application; Fertilizers; Flowering; Grain; Rice; Science; Seedlings; Selenium; Spraying; Beijing China; Yangtze River Delta; China
• ISSN: 2095-6819; 2095-6819
• DOI: 10.13254/j.jare.2014.0248

在田间小区的试验条件下研究不同硒(Se)肥的施用方法及施用时期对水稻植株和籽粒中Se的吸收与富集的影响。研究表明:水稻在生长前期和旺盛时期对Se的吸收和积累有很大差异。与对照相比,苗床施Se、土壤施Se和叶面喷Se 3种方式均能明显提高各生育期水稻植株和籽粒中Se的含量,富Se效果达到差异极显著水平。从稻米富Se效果看,富Se含量在0.163～0.207 mg·kg-1之间,Se含量增加了5.8～7.6倍,且都在安全范围内。从水稻富Se的方式上,不同施Se方式富Se效果依次为水稻扬花期喷Se>土壤施Se>育苗期喷Se>对照。从叶面喷施Se的时间上,稻米富Se效果依次是扬花期喷Se>育苗期喷Se>灌浆期喷Se>齐穗期喷Se>对照。从水稻富Se类型上看,外源无机Se和有机Se都能明显促进水稻对Se的积累。水稻育苗期和扬花期叶面喷Se在提高水稻稻米中含Se量的同时,并没有降低水稻产量。因此水稻叶面喷Se是一条安全、简单、易操作的途径。 Under field plot experiment condition, the different application methods and application periods of selenium(Se)fertilizer were explored to make sure the absorption and accumulation of Se in plants and grains of rice. The results showed there were significant differences in the early and exuberant periods of rice for Se absorption and accumulation. Compared with the control, three kinds of application methods could significantly improve Se value of rice. From the effect of Se enrichment, the content of Se was in the range of 0.163～0.207 mg·kg-1 which increased by 5.8～7.6 times, within the safe ra