摘要
研究 3 个不同生长季低于最适营养液浓度的定量栽培对迷你型萝卜生长和养分含量的影响.试验设定 3 个处理:硝态氮浓度为 500(T1)、400(T2)和 300(T3)mg·株-1,分别为最适浓度的 60%、50%和40%,在春、秋和冬 3 个生长季测定水培迷你型萝卜地上部和地下部生长、各部位养分和硝酸盐含量等.结果显示,春季各处理均达到商品质量,地下部鲜重最高为 T1 处理达到 54.5 g,但秋、冬季地下部生长较春季缓慢,叶长显著增加.3 个季节各处理地上部和地下部 N、K、Ca等营养元素含量变化不大,但硝酸盐含量呈不规律变化,今后还有待进一步研究.综合考虑,适合无土栽培周年生产迷你型萝卜的最适硝态氮浓度为 400 mg·株-1.
Abstract
In this article,the effects of quantitative nutrient management below the optimal nutrient solution concentration on the growth and nutrient contents of mini radish in three different growing seasons were studied.Three treatments were set in the experiment:500(T1),400(T2)and 300(T3)mg nitrate nitrogen per plant,which were 60%,50%and 40%of the optimum concentration,respectively.The above-ground and underground growth,nutrient contents and nitrate contents in different parts of mini radish with soilless culture were measured in spring,autumn and winter.The results showed that all treatments reached the commercial weight in spring,and the highest weight of underground part reached 54.5 g(T1 treatment),but the growth of underground part in autumn and winter were slower than that in spring,and the leaf length increased significantly.In the three growing seasons,the nutrient contents of N,K and Ca in the above-ground and underground were little changed,but the nitrate contents changed irregularly,which needs further study in the future.In overall consideration,the optimum concentration of nitrate nitrogen was 400 mg per plant,which was suitable for the annual production of mini radish with soilless culture.
基金项目
内蒙古农牧业青年创新基金项目(2023QNJJN07)
NETL
NSTL
维普
万方数据