论文部分内容阅读
农二师塔里木垦区,高粱黑穗病——长黑穗病、坚粒黑穗病、丝黑穗病都有发生。三种黑穗病都在抽穗前后显出病症。高粱丝黑穗病为害全穗,无收成,但发生很少;高粱坚粒黑穗病为害全穗,或仅少数籽粒幸免,一般发生率不高,但最严重的田块,发病率可达到70％;高粱长黑穗病仅为害个别或部分籽粒,被害粒附近子粒,粒重稍有降低(千粒重约降低3克),但发生普遍而严重,被害株率最高可达73％。 高粱长黑穗病,七月底八月初出现病粒,八月下旬为盛期,晚熟高粱上九月底仍可出现新病粒。
Agricultural division two Tarim reclamation area, sorghum smut - long smut, hard smut, head smut have occurred. All three smuts showed symptoms before and after heading. Sorghum smut is the most harmful species in the whole panicle, with no harvest but few occurrences; Sorghum stinky smut is the whole panicle, or only a few grains are spared, but the incidence is not high in general. However, 70%; sorghum stout only damage individual or part of the grain, grain near the particles, a slight decrease in grain weight (1000 grain weight reduced about 3 grams), but the occurrence of widespread and serious, the victim strain rate up to 73%. Sorghum long smut, tablets appear in late July and early August, the peak of late August, late maturing sorghum can still appear on the end of September new tablets.