小麦冻害一般发生在3月下旬至4月上旬,其危害程度主要取决于降温幅度。从近年来春季冻害发生的情况看,一般冬性品种轻、半冬性品种重;适期播种的轻,播种早、生长发育快的麦田重;精耕细作的轻,以旋代耕、耕作粗放的重;生长健壮的轻,弱、黄、瘦苗重。可见,预防冻害除需要选用抗冻 Frost damage occurs in wheat in late March to early April, the degree of harm depends mainly on the cooling rate. In recent years, the incidence of frost damage in the spring, the general winter varieties of light, semi-winter varieties of heavy; suitable sowing light, early sowing, rapid growth and development of wheat field weight; intensive cultivation of light, Heavy; robust growth of light, weak, yellow, thin seedling weight. Can be seen, in addition to the prevention of frost damage need to use antifreeze