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一、材料和方法试验在本所二场果园进行。试验国土壤为平地棕黄土,肥力较高。设生草施肥与生草不施肥(对照)两个处理。生草施肥是将果树施肥量的三分之一施在果树上,三分之二施在果树行间杂草上;生草不施肥,是将等量的肥料全部施在果树上。供试的果树为1969年定植的国光树,于1973年高接的富
First, the material and method test in the second orchard of the Institute. The test soil is flat brown-brown soil with high fertility. Set raw grass fertilization and grass no fertilization (control) two treatment. Green grass fertilization is applied to the fruit trees one-third of the amount applied to the fruit trees, two-thirds applied to the weeds between rows of fruit; grass does not fertilize the entire amount of fertilizer is applied to the fruit trees. The fruit tree for test is Guoguang tree planted in 1969, and was rich in 1973