Effect of Different Soil Cover Thicknesses on Growth Characteristics of Machine-Transplanted Rice Seedlings
In order to clarify the effect of the soil cover thickness on the growth of machine-transplanted rice seedlings,Zhongzao 39 was used as the experimental material,and three kinds of thick soil cover treatments were set up,which were 0 cm(CK),0.5 cm(T1),and 1 cm(T2).The emergence rate,height,root length,leaf age,green leaf number,total root length,total projection area,root surface area,root volume,and other indicators of the machine-transplanted rice seedlings were measured.The results show that the emergence rate of T1 treatment is significantly increased by 68.6%compared with that of CK treatment,but there is no significant difference with T2 treatment.The seedling height,total root number,and aboveground fresh weight of T1 treatment are significantly increased by 95.4%,80.6%,and 66.7%,respectively,compared with those of CK treatment.The seedling height,leaf age,total root number,and aboveground fresh weight of the T1 treatment are significantly increased by 80.2%,40%,7.7%,and 25%,respectively,compared with the T2 treatment.In summary,a soil cover of 0.5 cm can effectively improve the growth characteristics of machine-transplanted rice seedlings.
万方数据
维普
