论文部分内容阅读
1 纸筒移植栽培法日本为了提高甜菜单位面积产量,从一九六一年开始,实验纸筒移植栽培法,据称现已推广占甜菜种植总面积的80%,并认为这是一项最普通的增产技术。据介绍,纸向移植栽培法的优点是,用温床育苗,比直播法可提前30到35天潘种,苗长出2——4枚叶时移植,能减轻枯死病和线虫病等病害,防止生长分枝根,生长期
1 Paper-tube Cultivation Japan In order to increase the yield per unit area of beets, since 1961, experimental paper-tube cultivation has been reportedly promoted to account for 80% of the total area planted with sugar beets and is considered as the most Ordinary stimulation technology. According to reports, the advantages of paper to transplant cultivation method is that with hotbed nursery, than the direct broadcast method can be 30 to 35 days in advance Pan species, seedlings grow 2 - 4 leaves when transplanted to reduce the dead and nematode diseases, To prevent the growth of branching roots, growing season