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一、冬小麦死苗的原因分析1、内因:是指小麦植株本身抵抗寒害和旱害的能力。选用抗寒性能差的品种,冬季死苗现象严重;播种过早,麦苗冬前生长过旺,耐寒能力减弱,一旦遇到气温大幅度骤降,就会对植株造成冻害;播种过晚弱苗、浅播苗抗寒、抗旱能力差,一旦遇到寒冷天气也极易受到冻害。2、外因:是指小麦植株本身之外的各种因素。如不利的气候条件、土壤条件或不当的栽培措施等。
First, the causes of winter wheat dead seedlings 1, internal: refers to the ability of wheat plants to resist cold and drought. Selection of poor cold hardiness performance of winter dead seedlings serious; sowing too early, winter wheat seedlings over-growth, cold ability weakened, once the temperature plummeted, it will cause frost damage to plants; sown too late weak seedlings , Shallow sowing cold, poor drought resistance, in the event of cold weather are also vulnerable to frost damage. 2, external: refers to various factors outside the wheat plants themselves. Such as unfavorable climatic conditions, soil conditions or improper cultivation practices.