小麦的播种深度是影响小麦苗壮和苗全的关键因素之一。播种太深，延长了小麦的出苗期，消耗了大量种子营养，小麦出苗后生长瘦弱，甚至形成土里弯曲苗，造成缺苗断垄；然而播种太浅了，在土壤墒情不足和气候干旱的情况下，又容易造成种子落干，也同样影响小麦的苗全苗壮。... The sowing depth of wheat is one of the key factors affecting wheat seedling and seedling. Planting is too deep, extending the emergence of wheat, consume a lot of seed nutrition, thin wheat growth after emergence, and even the formation of soil bending seedlings, resulting in lack of seedlings broken ridge; however sowing is too shallow, lack of soil moisture and climate arid Under the circumstances, it is also easy to cause the seeds to fall dry, which also affects the seedlings of wheat. ...