摘要
以粉煤灰和超微细磷矿粉为包膜材料,自制2种不同涂层厚度的包膜缓释尿素,研究2种不同膜材料缓释尿素对小白菜生理特性的影响。试验结果表明:与普通肥料相比,自制包膜尿素对小白菜生物量、光合蒸腾速率、全氮、全磷、全钾、POD、SOD、CAT活性均具有显著的改善作用,其他指标与普通肥料的相比差异不显著。不同涂层厚度之间差异显著,其中以30%粉煤灰包膜尿素及25%和30%的超微细磷矿粉包膜尿素对小白菜的效果最好。
The experiment took the fly ash and superfine phosphate powder as the coated material, and made two kinds of coated slow-release urea（CSRU） with different coating thickness to study the effects on the growth of Chinese cabbage in field experiments. The experiment results showed that coated slow-release urea could significantly increase the plant biomass, photosynthetic rate, transpiration rate, total N, P and K, POD, SOD and CAT activity than those of CU,and other indicators were no less than those of CU. Different coating thickness had differences, and the type of 30% fly ash coated urea and 25%, 30% superfine phos- phate powder coated urea were the best to Chinese cabbage.
出处
《水土保持学报》
CSCD
北大核心
2011年第6期246-249,共4页
Journal of Soil and Water Conservation
基金
国家“十二五”科技支撑计划(2011BAD11B01,2011BAD11B02)
国家“948”重点项目(2011-G30)
国家自然科学基金(30871593)
关键词
包膜尿素
小白菜
生理特性
coated slow-release urea
Chinese cabbage
physiological characteristics
