| Climate change and agricultural planting situation were analysed.The crop planting structural optimisation model was set up and the scheme for adjustment of planting structure was put forward.According to this scheme,the proportion of potato planting was raised by 15.6% in the north of Wei River,by 40.7% in Guan Mountain area and by 8.7% in valley district than that of past.The area for Chinese medicinal herb was increased by 45.7% in north of Wei River.The planting area of winter rape was increased by 47.5% in valley district and by 22.7% in Guan Mountain area.The planting area of pepper in north of Wei River was increased by 28.6%,the area of vegetable and fruit in valley district was increased by 61% and 28.6%,respectively.The area of peach and apricot in north of Wei river was increased by 24.1% and 33.3%,respectively,the area of grape was increased by 40% in valley,the area of apricot was increased by 12.5% in mountain.The total output value of staple crops was increased by 10%. |