烤烟小苗清水栽技术研究初报

Preliminary report on clean-water cultivation technique for flue-cured tobacco seedlings

为解决湿润托盘育苗后期断水炼苗技术落实困难、烟苗不壮的问题,进行小苗清水栽与常规苗和标准苗移栽方式的对比试验,结果表明：以小苗清水栽方式提前移栽,与常规苗和标准苗移栽相比,育苗用工减少,移栽后成活率相近,返苗速度快1～2d,苗床期缩短10～20 d,大田生育期延长5～14 d;烤烟气候斑点病、花叶病发病率和病指较低;产量和经济效益有所增加;中上等烟比例提高3.1～3.6个百分点.

To solve the difficulties in technical implementation of training seedlings in moisture trays after water-break, andthe problem in not strong tobacco seedlings, a comparison test to the conventional seedlings and seedlings planted with clean-water was carried on, the results showed that, compared with the conventional seedling transplanting, the seedlings plantedwith clean-water and transplanting in advance time, the labor of seedling cultivation was reduced, the survival rate was simi-lar after transplanting, seedling returning-green rate was 1 -2 d faster, seedbed period shortened by10 -20 d, field growthperiod prolonged by 5 - 14 d; incidence and disease index of flue-cured tobacco weather fleck and mosaic were low; the yieldand economic benefit increased; middle and top fine tobacco ratio increased by 3.1 - 3.6 percentage points.