【摘要】 针对郊区果园土壤肥力不足、产量不高、品质差的问题,提出了改变土壤肥力,提高产量和产品品质的主要技术对策。更多还原

【Abstract】 In the light of insufficient soil fertility, low yield and poor qua li ty, this paper puts forward some major technical countermeasures for increasing the yield and the quality of the products.更多还原