空中核爆炸对水稻的损伤及其恢复

在空中核爆炸的情况下,光辐射是损毁水稻的主要因素,光辐射可使三叶期、分蘖期水稻的叶片烧损、株高降低,其损毁程度随着距爆心距离的加大而减弱,叶片受到烧损仍然存活的植株,爆后可迅速恢复生长,叶片数、株高在较短时间内即可达对照水平,分蘖能力也不受影响。收获时大部分受损水稻的穗长、穗粒数、千粒重、平均单株分蘖数、

The Damage Effect of Atomic Air Burst to Rice Plants and Its Restoration

When an atomic air burst was conducted,the light irradiation was a main factorfor the damage to rice plant.In the stages from three leaves to tillering,the lightirradition could make the rice leaves burn and the plant height decreased.The dama-ge degree was decreased with increasing the distance to the burst point.The plantswith damaged leaves could still survive and restore growing then.After some days,their leaf number and heights could reach to the CK's.Their tillering ability wasnot affected.When they were harvested,it was found that the rice plants damagedby the light irradiation had no significant differences from the CK in following charac-ters such as panicle length,seed per panicle,TGW,mean of tillering per plant,andrate of effective tillering.The experimental results showed that it was still productiblein the region with more than 50 per cent plants survived if the rice was striken by anatomic air burst in three leaf stage to tillering stage.