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今后世界花生生产的发展,总的趋势还是增长的,但仍将受到许多已知和未知因素的制约。 (一)影响七十年代世界花生生产的各种因素仍将在近期和远期内发生作用。1:在世界人口增长迅速,耕地面积不断减少的情况下,世界花生种植面积难望有大的扩大,局部地区甚至还会不断减少;2,到本世纪末,世界气候变冷的趋势还会持续下去,气候反常和各种大的自然灾害仍将不断发生,这无疑会使世界生产更加不稳定;3、各生产国花生产区都比较集中和固定,长期持续栽种,各种病虫
In the future, the general trend of peanut production in the world will grow, but it will still be constrained by many known and unknown factors. (A) The various factors that affect the peanut production in the world in the 1970s will still play a role in the near future and in the long term. 1: With the rapid population growth and declining cultivated area in the world, the area planted to peanuts in the world is expected to expand greatly, and some areas will even continue to decline. 2. The tendency of the world’s climate to cool will continue by the end of this century The climate anomaly and all kinds of major natural disasters will continue to occur. This will undoubtedly make the world’s production more unstable. 3. The flower-producing areas in each producing country are more concentrated and fixed, and will continue to grow for a long time. All kinds of pests and diseases