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为防御东北玉米低温冷害，研制了一种新型的玉米抗低温助长剂，其抗低温效果已为人工温控试 验所证实。本项研究采用分期播种、地理播种和田间多处理对比试验方法，检验该化学制剂在影响玉米 发育、生物量及产量性状方面的实用效果，并探求其适宜的浓度配比和喷施期次。研究结果表明，该制 剂具有促生长、促早熟和使作物高产的性能，可防御延迟型冷害。施用时以１：４００倍液和在营养生长期 内两次喷施为佳．
In order to prevent the chilling damage of northeast corn, a new type of maize low temperature extender was developed, whose anti-hypothermia effect has been verified by artificial temperature control test. In this study, the staged seeding, geographical sowing and field multi-treatment comparative test methods were used to test the practical effects of the chemical agent on the development, biomass and yield traits of maize, and to explore its suitable concentration ratio and spraying times. The results show that the preparation has the functions of promoting growth, promoting precociousness and high yield of crops, and can prevent delayed chilling damage. When applied to 1: 400 times the liquid and the vegetative growth period of two spray better.