稚蚕一回育壮蚕二回育试验初报

随着农村产业结构的调整和劳动力的转移,蚕桑生产正朝着现代化,科学化方向发展.当前,影响蚕桑生产发展的最大障碍是养蚕花工多,劳动强度大,经济效益低.因此采用省力化养蚕技术是目前发展蚕桑生产的一项势在必行的措施.全龄少回育试验实行稚蚕一日一回育、壮蚕一日二回育,试验结果表明:减少给桑回数是提高养蚕工效的一项可取措施.少回育与四回育相比,能节省养蚕用工43.1%,节省桑叶31.8%,取得与四回育相当的蚕茧产量与质量,从而达到低消耗、高工效、高效益的目的.

A PRELIMINARY REPORT OF A TEST OF ONE-AND TWO-FEEDINGS-A-DAY FOR YOUNG AND GROWN SILKWORMS

With the readjustment of industrial structure in the rural areas and the shift of rurallabour, sericultural production has to be made more scientific and modernized in China. Atpresent, high cost of labour, great labour intensity and low economic returns constitutethe primary limiting factors for the further growth of sericulture. Therefore, the develop-ment of a labour-saving rearing method is of great practical significance. In an experimentreported here, one and two feedings were given to young and grown silkworms, respec-tively, with four-feedings-a-day throughout the growing period as the control. The resultsshowed that reduction of daily feeding frequency is a feasible way to decrease productioncost and enhance Iabour efficiency and economic returns in silkworm-rearing. Comparedwith the traditional four-feedings-a-day, the new feeding method saved labour and mulber-ry leaves by 43. 1% and 31.8%, respectively, while the cocoon yield and quality was notadversely affected.