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马铃薯是一种高产作物,历年连受晚疫病为害,造成巨大损失。山西省1952年以来,经过试验,示范和深入病区调查总结群众经验,初步得出防病增产的效果显著,但应该指出两点:(一)为了防治晚疫病从外地调种,不仅化钱多、浪费大,调种不及时影响播种,而且将外地病虫害随种薯引入本地,造成后患,得不偿失;今后应提倡本地山川调种,设置良种繁殖区,以解决种薯供应和防止种薯退化问题。(二)从此材料中我们看到综合措施中每一环节都有增产作用,但为收到更大的防病增产效果,必须在同一地内同時贯彻这一系列的措施,才能符合综合防治的要求。
Potato is a high-yield crop that has been affected by late blight over the years, causing huge losses. Since 1952, Shanxi Province has tried its best to sum up the experiences of the masses through trial, demonstration and in-depth ward surveys. Preliminary results show that the effect of disease prevention and increase of yield is remarkable. However, two points should be pointed out: (1) In order to prevent and cure late blight disease, In the future, local mountain and mountain planting should be promoted and seed breeding areas should be set up so as to solve the problem of seed potato supply and prevent the degradation of seed potatoes. problem. (2) From this material, we have seen that every step of the comprehensive measures has the effect of increasing production. However, in order to receive greater prevention and increase yield, it is necessary to implement these series of measures simultaneously in the same place in order to meet the requirements of comprehensive prevention and control .