The Effect of Foliar Spray of Urea on Tea Cuttings

[摘要] 1. The effect of foliar spray of urea on the growth of tea cuttings were researched from 1953 to 1954. As the result of the experiment, the survinal percentage, the number of new roots, number of new leaves, lengths of new shoots, and new shoot weights increased, while the number of flower-bud decreased under the foliar spray of urea. And the analysis of variance indicated that these tendencies were recognized highly significant in the pretreatment, namely, spraying the shoots to be useful for cuttage. 2. The growth of shoot after spraying was observed, and the following results were obtained. The dimension of leaf and the internal tissues were not changed, but the development of new shoot was obstructed by the foliar spray. Chemical analysis of the leaf and stem was carried out also. The total nitrogen and the soluble nitrogen increased, and the tannin did not varied, while the crude fibre decreased, under foliar spray.

[学科分类] 农业科学（综合）