北斗苹果生产四问１．对已发展的北斗园要不要换种？首先应该肯定，北斗果实的风味优于母本富士，可溶性固形物含量一般高于富士。由于它是个三倍体品种，树势壮旺，抗逆性强，早果性、丰产性都好于富士，所以在日本青森县仍有较大面积的栽培。青森县计划到２０００年使北... Beidou apple production four asked 1. Beobuyuan have been developed to change? First of all, it should be affirmed that the flavor of Beidou fruit is better than that of female Fuji, and the content of soluble solids is generally higher than that of Fuji. Because it is a triploid species, strong tree vigor, strong resistance, early fruit, high yield are better than Fuji, so there is still a large area of ​​Aomori cultivation. Aomori plans to make the North by 2000 ...