木薯茎秆粉碎还田对木薯产量影响初探

Effect of returning shattered cassava stalks into field on cassava yield

为了充分利用木薯茎秆的生物能,以华南8号木薯品种为材料,研究不同木薯茎秆粉碎还田量对木薯产量、干物率及其他生物学指标的影响。结果表明,木薯茎秆粉碎还田处理对木薯干物率影响不大;木薯种茎秆粉碎还田处理的产量与株高、茎粗和叶片重量相关性较小;采用600、900和1200kg·ha-1木薯茎秆粉碎还田处理的鲜薯产量比对照(未施用木薯茎秆)的产量显著提高,尤其是施用600kg·ha-1粉碎茎秆处理的产量最高。

The experiment has been conducted to study the effects of returning shattered cassava stalks into fields using cassava variety Huanan 8 as experimental material.Three different treatments viz.,A： 600 kg·ha^-1,B： 900 kg.ha^-1,C： 1200 kg·ha^-1 and their effect on the yield,dry matter content and other biological factors were studyied in order to make full use of the cassava biomass.The results showed that the treatments had little effect on the dry matter contents,and the treatments had weak correlation with plant height,stalk diameter and leaf weight.The average yield of treatments A,B and C were 43683.0,39947.0 and 41772.0 kg.ha^-1,respectively,which were significantly（P〈0.05） higher than that of CK（34601kg.ha^-1）.