This is considered as a way of obtainig hyrid seeds bothefficiently and economically in the utilization of intraspecific heterosisin upland cotton.

• 利用棉花栽培上的间苗技术,按指示性状拔除伪杂种,简化制种手续,是棉花杂种优势利用中经济有效地生产杂交种子的途径。