甘薯生产技术测试题

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1、甘薯生产技术测试题 1．我国北方地区种植甘薯的面积在粮食作物中位居A第二                 B第三C第四                            D第五2．我国华北地区春薯生育期一般为A150-190天                                                      B120-150天C110-120天                                                      D90-110天3．我国华北地区夏薯生育期一般为A150-190天                     

2、                                 B120-150天C110-120天                                                      D90-110天4．甘薯的苗床期一般经历A15天                                                        B25天C1-2个月                                                   D3个月5．甘薯一生中最耐旱的时期是A苗床期                           

3、                         B发根缓苗期C分枝结薯期                                            D薯蔓同长期6．能吸收水分和养分，增强甘薯抗旱能力的根是A须根                                                        B块根C梗根                                                        D柴根7．徒耗养分，无经济价值，大田生产时应控制生长的是A须根                                  

4、                      B块根C梗根                                                        D纤维根8．甘薯贮藏营养物质的主要器官是A须根                                                        B块根C梗根                                                        D纤维根9．薯蔓同长期叶面积指数达最高值，约为A3                                             

5、                 B4C5                                                               D610．对甘薯产量影响最大的因素是A种植密度                                                       B块根数量C块根重                                                    D种植时间11．决定块根形成的主要时期是甘薯栽插后A10-25天                                        

6、           B25-35天C35-50天                                                   D60-75天12．春薯栽后多少天块根开始膨大，有两个盛期和一个低谷。A30天                                                        B40天C50天                                                        D60天13．春薯块根膨大第一盛期出现在栽后A45-60天                               

7、                   B60-75天C75-125天                                                 D126-140天14．甘薯温汤浸种时置入温水的温度是A58-60℃                                                    B53-55℃C48-50℃