1.有机肥肥害有机肥未腐熟施用或者施入比较集中,未与土掺匀,易发生肥害。有人在葡萄定植沟内施入未充分腐熟圈粪约25公斤,且肥料成团成块,结果出现肥害症状,葡萄幼苗一开始长得很好,但当苗高20厘米左右时。除蔓尖上的几个嫩叶外,其余叶片均出现焦边现象,受害严重的村,叶片脱落,扒开土层后发现肥块周围大部分须根死亡。 1. Organic fertilizer Fertilizer organic fertilizer is not decomposed or applied into the more concentrated, not mixed with the soil, prone to fat. Some people in the grape planting ditch into the incompletely decomposed lap dung about 25 kg, and the fertilizer into a group into blocks, resulting in fertilizer symptoms, grape seedlings grow well at the beginning, but when the seedling height of about 20 cm. Except for several tender leaves on the vine tip, all the other leaves showed the phenomenon of coke burrowing. The severely affected villages and leaves fell off, and most of the fibrous roots around the fertilizer block were found dead after they were removed from the soil.