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为解决衡阳烟区育苗时温度过低影响烟苗后期生长的问题,进行了育苗池的增温育苗试验,对育苗池温度变化、烟苗生长状况和移栽后的大田农艺性状及产量产值等经济性状进行了测定。结果表明,增温育苗可以有效提高育苗池水体温度(3~8℃)和育苗盘温度(1~5℃),提高壮苗率;增温培育的烟苗移栽后株高、茎围等都大于不增温培育的烟苗,节距则小于对照,因而叶片数更多,叶面积也要大于对照;产量、产值、上中等烟比例等也明显优于对照。
In order to solve the problem that the temperature is too low and affects the late growth of tobacco seedlings in Hengyang tobacco growing area, the experiment of raising temperature in nursery ponds was carried out. The changes of seedling raising temperature, the growth status of tobacco seedlings, Economic traits were determined. The results showed that raising seedlings by raising temperature could effectively increase the temperature of water body (3-5 ℃) and seedling raising tray (1-5 ℃) in nursery ponds and increase the strong seedling rate. The plant height, stem circumference and so on Are greater than the non-temperature-raising tobacco seedlings, the pitch is less than the control, so the number of leaves more leaf area should be greater than the control; yield, output value, the proportion of medium-sized tobacco was also significantly better than the control.