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通过不同地区、不同品种的比较试验，研究了抗寒剂ＣＲ－４在早稻上的应用效果，结果表明：抗寒剂能提高秧苗对低温逆境的适应能力，防止或减轻水稻烂秧，提高秧苗素质，对增加稻谷产量具有显著的作用。在使用方法以浸种法较好。
The effect of CR-4 on early rice was studied through comparative experiments in different regions and different varieties. The results showed that the cold-resistant agent can improve the adaptability of seedling to low temperature stress, prevent or reduce rotten seedling and increase seedling Quality, have a significant role in increasing rice production. In the use of soaking method is better.