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镇安县城关公社县河大队科学实验小组为了解决红薯“下蛋”用种量大和母薯膨大及不下蛋等问题,参考安徽省的经验,于一九七一年进行了红薯切块直播小型试验。种薯切块分四种处理:1.横切两段;2.纵切两半;3.纵切四块;4.纵横切四块。将选好的种薯用薄刀切后,随即用生石灰涂抹消毒。四月二十五日下种(较一般红薯下蛋迟种约十五天),试验总面积660平方尺,栽培管理与一般红薯下蛋相同,十月十日收获。试验结果表明,纵切四块效果最好,下蛋率为97％,单株平均产量2.67市斤。纵横切四块效果最差,下蛋率仅78％,单株平均产量为1.46斤。其余两种处理居中,下蛋率各为90
Zhen’an County Chengguan Commune County River Brigade Scientific Experimental Group In order to solve the sweet potato “laying eggs” with a large amount and enlargement of the potato and not lay eggs and other issues, with reference to the experience of Anhui Province, in 1991, the sweet potato diced live small trials. Seed potato cut into four kinds of processing points: 1. Cross-section; 2. Slitting two halves; 3. Slitting four; The selected seed with a thin knife cut, then coated with quicklime disinfection. April 25 (about 15 days later than ordinary sweet potato eggs), with a total test area of 660 square feet. Its cultivation and management are the same as that of ordinary sweet potato eggs and harvested on October 10. The test results show that the best effect of four vertical slitting, laying eggs was 97%, average yield of 2.67 catties per plant. Vertical and horizontal cutting four worst, laying eggs only 78%, average yield per plant 1.46 kg. The remaining two kinds of treatment center, egg laying rate of 90 each