During the tobacco hardening period bed of tobacco seedling was the falling target of alate aphids and was the main resource of tobacco virus spread by aphids.
The relation between the days of cion seedlinghardening-off, the number of cion leaves, the different explicit hormone processing the interface and the survival rate of graft were investigated.
实验研究了接穗炼苗的天数、接穗叶片数、接口用不同外源激素处理与嫁接成活率的关系。
3
The content of polysaccharide, flavone, amino acids, and alkaloids is lowest in period of the seedlinghardeningof Anoectochilus roxburghii.