2个木薯主栽品种对氮浓度梯度的响应  

The Response of Nitrogen Concentration Gradient of Two Cassava Varieties

作　　者：付海天 汪全伟[3] 杨景豪[1] 彭明[1] FU Haitian;WANG Quanwei;YANG Jinghao;PENG Ming(Institute of Tropical Bioscience and Biotechnology,Chinese Academy of Tropical Agricultural Sciences,Haikou,Hainan 571101;Guangxi Subtropical Crops Research Institute,Nanning,Guangxi 530001;Institute of science and technology information,Chinese Academy of Tropical Agricultural Sciences,Haikou,Hainan 571101)

机构地区：[1]中国热带农业科学院热带生物技术研究所,海南海口571101 [2]广西壮族自治区亚热带作物研究所,广西南宁530001 [3]中国热带农业科学院科技信息研究所,海南海口571101

出　　处：《热带农业工程》2021年第1期150-153,共4页Tropical Agricultural Engineering

基　　金：国家重点研发计划专项(No.2018YFD0201100)。

摘　　要：为探讨2个木薯主栽品种‘南植199(NZ199)’‘华南205(SC205)’在大田条件下对氮浓度的响应,设置农民习惯、0、25%、50%、75%、100%等6个处理,结果表明,随着氮肥施用量的增加,木薯鲜重和淀粉产量都得到提高;同样施肥条件下(处理6除外),‘NZ199’的主要经济指标——淀粉产量与‘SC205’差异显著,说明‘NZ199’比‘SC205’更适宜在当地推广种植。另外,‘NZ199’在处理4中高产淀粉的同时,淀粉的增加量表现也比较突出,这为后期的木薯减肥提供了参考。In order to study the response of two main cassava varieties Nanzhi 199(NZ199)and South China 205(SC205)to nitrogen concentration gradient under field conditions,six treatments were set up included farmers'habit,no nitrogen fertilizer,25%nitrogen fertilizer,50%nitrogen fertilizer,75%nitrogen fertilizer and 100%nitrogen fertilizer.The results showed that with the increasing of nitrogen fertilizer amount,the starch yield and fresh weight of cassava are increasing.Under the same fertilization conditions(except treatment 6),the difference of main economic index-starch yield between NZ199 and SC205 reached a significant level,which indicated that NZ199 is more suitable for local planting than SC205;In addition,when NZ199 istreated with treatment 4,the increasing of starch is also prominent,which provides reference for cassava decreasing nitrogen fertilizer in the later.

关 键 词：木薯 氮浓度梯度 响应淀粉产量 

分 类 号：S533[农业科学—作物学]