论文部分内容阅读
我县有砂姜黑土地七十万亩,占总耕地面积的51.4%。近年来由于推广了增施磷肥,氮磷肥配合,科学施肥,种植绿肥等增产技术措施,小麦亩产由原来一百多斤,上升到500斤以上。选用的品种主要是百农3217。但生产上播量偏大,一般每亩在23斤以上,造成前中期群体过大,田间郁蔽,通风透光条件恶化,个体发育不良,对培育冬前
My county has 500,000 acres of sand ginger black soil, accounting for 51.4% of the total arable land. In recent years, due to the promotion of increased application of phosphate fertilizer, nitrogen and phosphorus fertilizer, scientific fertilization, planting green manure and other stimulation techniques, wheat yield from the original one hundred kilos, up to 500 pounds and above. The main varieties used are hundred agricultural 3217. However, the production of large amount of sowing, generally more than 23 pounds per acre, resulting in the former mid-term groups are too large, field Yuya, deterioration of ventilation and light conditions, the individual dysplasia, pre-winter cultivation