加西得乐富硒专用肥在水稻上的应用效果研究

Study on application effect of jiaxidele selenium-rich special fertilizer on rice

针对江汉平原地区市场上使用较多的一种硒肥,采用本区域种植面积较大的两个水稻品种,设置不同的硒肥施用浓度试验,通过田间试验、室内分析和生物统计的方法,开展应用效果研究。结果表明,在水稻孕穗期、破口期、灌浆期叶面喷施富硒专用肥3次,能显著提高稻谷中硒含量;两种施用浓度稻谷中硒含量差异不显著,相同喷施浓度,不同品种之间稻谷中硒含量存在差异,且差异显著;喷施硒肥对水稻的株高和实粒数、产量均有提升,但差异不显著;喷施硒肥能够显著提升水稻生产效益。提升水稻硒含量效果最佳、效益最好的处理为在水稻孕穗期、破口期、灌浆期叶面喷施浓度为900 mL/hm^2富硒专用肥3次。

Two rice varieties with large planting areas in this region were used to set different selenium fertilizer application concentration tests for one kind of selenium fertilizer widely used in the market in Jianghan plain area. By means of field experiment, laboratory analysis and biostatistics, the application effect was studied. The test results showed that: Selenium content in rice could be significantly increased by spraying selenium-rich fertilizer on the leaf surface for three times in the booting stage, breaking stage and grouting stage;There was no significant difference in selenium content between the two application concentrations;With the same spraying concentration, there were significant differences in selenium content between rice varieties. in addition, selenium fertilizer could increase plant height, grain number and yield of rice, but the difference was not significant. Spraying selenium fertilizer can significantly improve rice production efficiency. The best treatment with the best effect and benefit to improve the selenium content in rice was to spray the selenium enriched fertilizer on the leaf surface for three times at the booting stage, the fracture stage and the grouting stage at a concentration of 900 mL/hm^2.