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传统的育苗方法,在往存在着烟苗细弱、根系不发达,苗床杂草多、花工大等问题;移栽后烟苗的成活率较低,返青慢,生长不整齐,对产量和质量有一定影响。营养土育苗则能克服常规育苗的缺点。其优点是:烟苗粗壮,根系发达,素质好,生长均一,移栽大田后,无返苗期,能早生快发,生长整齐。同时有利于集中管理,提高工效。具体做法是:1.苗床准备苗床应选择在避风向阳、排灌方便的稻田,(?)
The traditional seedling breeding methods are characterized by weak seedling, underdeveloped root system, many weeds in seedbed, large flower-planting and other problems. The survival rate of tobacco seedlings after transplanting is low, the green returning is slow and the growth is irregular, and the yield and quality are Certainly affected. Nutritional soil nursery can overcome the shortcomings of conventional nursery. Its advantages are: thick tobacco seedlings, developed root system, good quality, uniform growth, transplanting field, no seedling back to early hair fast growth and tidy. At the same time is conducive to centralized management, improve work efficiency. The specific approach is: 1. Seedbed preparation Seedbed should be selected in the shelter sunny, irrigation and drainage of rice fields, (?)