1为什么秋延迟黄瓜定植后有死苗现象?答:秋延迟黄瓜主要在大拱棚或简易日光温室中栽培,生长期120～150d(天),育苗期正值炎热的夏季,8、9月幼苗定植后容易出现死苗现象。原因主要有以下三个方面:①施用未充分腐熟的鸡粪、牛粪及各种农家肥,且施用量过多。部分农户以为肥料在地头堆积半年之久,已自然腐熟,但实际上由于肥料湿度大,且又用塑料薄膜盖着,好氧微生物 1 autumn delay cucumber after planting phenomenon of dead seedlings? A: Autumn delayed cucumber is mainly cultivated in a large shed or simple greenhouse, the growing period of 120 ~ 150d (days), nursery hot summer, August and September seedlings Dead seedling tends to appear after planting. The main reasons for the following three aspects: ① application of less well-maturity of chicken manure, cattle manure and a variety of farmyard manure, and the amount of too much. Some farmers think that the accumulation of fertilizer in the ground for six months, has naturally decomposed, but in fact due to fertilizer humidity, and again covered with plastic film, aerobic microorganisms