外源钙对食用木薯产量及其品质的影响研究

Effects of exogenous calcium on the yield and quality of edible cassava

以木薯NK-10、SC12、SC9为试料,设置0 kg/hm^(2)(CK)、20 kg/hm^(2)(T1)、40 kg/hm^(2)(T2)、60 kg/hm^(2)(T3)4个外源钙用量处理,研究外源钙对食用木薯产量及品质的影响。结果表明:随着外源钙施入量的增加,食用木薯的产量、薯长、薯粗、淀粉均呈现先增大后减小的变化趋势,块根的钙、蛋白质、粗纤维呈现逐渐增加的变化趋势,而生理性变质(PPD)的产生呈现逐渐减小的趋势,其中产量和薯粗在T1、T2处理下显著大于CK,薯长在T1处理下显著大于CK,钙、蛋白质含量在T2、T3处理下显著大于CK,淀粉含量在T1、T2、T3处理下显著大于CK,T2、T3处理下的PPD产生显著少于CK;回归分析结果显示,当外源钙的施用量为33 kg/hm^(2)时,食用木薯的产量达到最大值。综上所述,一定范围内的外源钙可以提高食用木薯的根长、根粗、产量、淀粉、蛋白质,对提高木薯的耐贮藏能力也有重要作用,最适宜的外源钙施用量为33 kg/hm^(2)。

In this study,NK-10,SC12 and SC9 were used as test materials,and 4 exogenous calcium treatments[0 kg/hm^(2)(CK),20 kg/hm^(2)(T1),40 kg/hm^(2)(T2)and 60 kg/hm^(2)(T3)]were set up to study the effects of exogenous calcium on the yield and quality of edible cassava.The results showed that with the increase of exogenous calcium application amount,the yield,potato length,potato thickness and starch of edible cassava increased first and then decreased,the calcium,protein and crude fiber of root tuber increased gradually,while the production of physiologically deteriorated(PPD)production decreased gradually.The yield and potato diameter under T1 and T2 treatments,potato length under T1 treatment,calcium and protein contents under T2 and T3 treatments,starch content under T1,T2 and T3 treatments were significantly higher than the CK,while the PPD production under T2 and T3 treatments was significantly less than the CK.The results of regression analysis showed that when the application amount of exogenous calcium was 33 kg/hm^(2),the yield of edible cassava reached the maximum.It can be concluded that exogenous calcium in a certain range can improve the root length,root diameter,yield,starch and protein of edible cassava,and it also plays an important role in improving the storage capacity of cassava.The optimal application amount of exogenous calcium is 33 kg/hm^(2).