论文部分内容阅读
去年五月上旬呼市地区连续四天(七—十日)出现霜冻,地面温度达一2.7°C——7.3℃,玉米幼苗遭到冻害。前年霜冻时间是五月十四——十七日,比去前年早7～8天。去年地面最低温度达-10℃,比前年高2.7℃,所以去年的霜冻,对大秋作物的为害程度不如前年严重。然而在这次霜冻中,玉米比其它作物受害较重。据在呼市郊区桃花公社贾家营大队田间调查结果,幼苗受冻率达16.8%。为此,对玉米幼苗的受冻规律和受冻机制进行了调查研究,从形态学上、解剖学上、生理学上加以分析比较,以期了解其实际受害程度。
In early May last year Hohhot area for four consecutive days (seven - ten days) frost, the ground temperature reached a 2.7 ° C - 7.3 ℃, corn seedlings were frostbite. The year before the frost time is May 14-17, 7 to 8 days earlier than the previous year. Last year, the minimum temperature on the ground reached -10 ℃, 2.7 ℃ higher than the previous year. Therefore, last year’s frost was not as serious as that of the previous year. However, in this frost, corn harms more than other crops. According to the Hohhot suburb of peach commune Jia camp battalion field survey results, seedlings frostbite rate of 16.8%. To this end, the freezing of frying corn seedling mechanism and the mechanism of the investigation were carried out, from the morphological, anatomical, and physiological analysis, in order to understand the actual extent of the victims.