季节性降温对小麦产量的影响及应对措施研究

Effects of Seasonal Cooling on Wheat Yield and Countermeasures

应用人工智能控温系统模拟春季季节性降温,通过盆栽试验研究了季节性降温对小麦产量的影响。试验结果表明:在倒2叶露尖期、打苞期、开花期接受降温干预后,小麦品种扬麦23和徐麦35的产量比未接受降温干预的对照下降了31.41%~42.20%;采用拔节期喷洒抗倒酯或在降温前后施加氮肥的措施可以减弱季节性降温对小麦产量的不利影响;在上述3种应对措施中,在季节性降温前采用预防性施加氮肥的措施能更好地缓解低温带来的小麦减产效应。

The artificial intelligence temperature control system was used to simulate the seasonal cooling in spring,and the effects of seasonal cooling on wheat yield were studied through pot experiment.The experimental results showed that the yield of Yangmai 23 and Xumai 35,which received the cooling intervention in the apical stage of the last two leaves,the budding stage and the flowering stage,decreased by 31.41%~42.20%,while spraying anti invert plant growth regulators and applying nitrogen fertilizer at the jointing stage could reduce the adverse effects of seasonal cooling on wheat yield.The way of applying preventive nitrogen fertilizer before seasonal cooling had the most significant inhibitory effect on the yield reduction effect of wheat at low temperature.