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我省每年受冰雹袭击的作物面积近百万亩,多数作物虽能恢复生机,但因生育期不足,减产严重,甚至绝产。而地瓜再生能力强,又无明显生育期,且块根生长在地下,遭雹后减产较轻。即使植株叶片全部被打光,经过再生,一般仅减产20～30％,如能及时管理,还可减少损失。管理遭雹灾地瓜的措施是:立即铲趟、疏松土壤,以提高地温和改善土壤通气条件,再结合追施速效氮肥,以促进茎叶生长。每亩用硫铵40斤或尿素20斤,在垄帮开沟条施
In our province, there are nearly one million mu of crops hit by hail every year. Although most crops can recover their vitality, they have suffered serious shortage of production and have even reduced their output. The regeneration of sweet potatoes and strong, but no significant growth period, and root growth in the ground, after the hail yield reduction lighter. Even if all the leaves of the plants are polished, after regeneration, the output will only be reduced by 20-30%. If they can be managed in time, they can also reduce the losses. The measures to manage the hated sweet potatoes are: shovel trip immediately, loosen the soil, in order to improve the geothermal and improve soil aeration conditions, combined with topdressing effective nitrogen fertilizer to promote stem and leaf growth. 40 kg per mu with ammonium sulfate or urea 20 kg, in the ridge to help trenching facilities