科学养殖(Science of Farming)

today i wnt to th country to s my uncl. sing th grn cabbags and th fin what, i couldn't hlp asking how h could grow thm so wll.uncl said that scinc of farming was important.it includd: choosing th bst sds; kping th condition of soil good and ploughing dply; sowing th sd and growing young plants at th corrct tim; changing th crops in th filds; and giving plnty of watr, light and frtilizr.