论文部分内容阅读
小麦开花结实期常遇高温、低湿的危害,短时间内即可造成植株青枯伤害。在高温、低湿影响下,小麦地上部蒸腾作用强烈增大,根系活力下降,结果植物体内含水量急剧降低,导致植株青枯伤害。用高温、高湿处理小麦植株时未出现上述伤害症状,表明植株青枯伤害与植株水分含量密切相关。小麦植株青枯害伤过程中,低湿的作用明显地大于高温的作用。同时,复合因素对植株的伤害程度均高于任何单一因素。讨论了小麦植株青枯发生的规律和高温,低温在小麦植株青枯伤害中的作用。
Wheat flowering often met the high temperature, low humidity damage, plant damage can cause short-term injury. Under the influence of high temperature and low humidity, the transpiration of wheat increased strongly and the activity of root decreased. As a result, the water content in plants decreased sharply, which led to the injury to the plants. The above symptoms of harm did not appear when the wheat plants were treated with high temperature and high humidity, which indicated that the injury of plantlets was closely related to the moisture content of the plants. In the process of wheat injury and wilt, the effect of low humidity is obviously greater than that of high temperature. At the same time, the compound damage to plants is higher than any single factor. The rules of wheat withered plant and the effect of high temperature and low temperature on the injury of wheat plant were discussed.