论文部分内容阅读
春甘蓝改良式小拱棚栽培,、综合了改良地膜覆盖栽培和小拱棚覆盖栽培的特点,即采取双行沟栽,小拱棚覆盖,提高温度,并使畦内空间较大,昼夜温差变幅较平缓,这种栽培方式可大幅度促进甘蓝早熟丰产,据调查:定植后10天间,平均畦内气温比露地高3～4℃,有利于春甘蓝早期生长,提高单球
Improved cabbage cultivation of spring cabbage, integrated improved mulch cover cultivation and small arch covered cultivation characteristics, that is, to take double row ditch planting, small arch cover to raise the temperature, and the larger space within the,, diurnal variation of temperature range This method of cultivation can greatly promote the early yield of cabbage, according to the survey: 10 days after planting, the average temperature within the 畦 3 ~ 4 ℃ higher than the open field, is conducive to the early growth of spring cabbage, improve the single ball