一、小麦冬春死苗原因1.内因系指小麦植株本身抵抗寒害和旱害的能力。栽培时若采用抗寒性差的小麦品种,遇冻害易出现死苗现象。个别播种过早、冬前穗分化到二棱期的麦苗耐寒能力较弱,遇冻害 First, the reasons for winter wheat and spring dead seedlings 1. Internal causes refers to the ability of wheat plants to resist cold and drought damage. If the cultivation of poor cold resistance if the use of wheat varieties, fry injury appears prone to dead phenomenon. Individual sowing too early, before the winter spike differentiation to the two barley cold tolerance is weak, case of frost damage