论文部分内容阅读
小麦正常幼苗长至3—5叶时,在冬季常出现不同程度的黄苗。根据田间调查,导致小麦苗黄的主要因素是水、肥、酸、碱不协调和受病害的影响而造成,应加以防治。 1.对土壤含水量过高的渍水田,小麦根系呼吸困难造成的黄苗,采取理沟排水,中耕松土,结合每亩撤施草木灰60公斤,促生长发育。 2.因播种墒情不好,土壤水分不足,出苗不整齐,生长发育不好而
When the normal wheat seedlings grow up to 3-5 leaves, yellow seedlings often appear in different degrees in winter. According to the field investigation, the main factor leading to the seedling yellowing of wheat is the uncoordinated water, fat, acid and alkali and the disease caused by disease, which should be controlled. 1. On the paddy field with excessive soil water content, the yellow seedlings caused by the respiratory difficulty of wheat root, take the rationale for drainage and cultivation of loose soil, and combine with 60 kg of plant ash per mu to promote the growth and development. 2 due to poor sowing soil moisture, soil moisture, irregular emergence, poor growth and development