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顶凌耙麦的增产效果十分显著。洛川县永乡公社冯家村大队实行顶凌耙麦的,比未耙麦田增产14.5%,京兆公社安善大队春耙100亩,比未耙麦田增产17.7%。顶凌耙麦的好处是:(一)保墒防旱。经过耙地,破除了土壤板结,疏松了表土,填补了裂缝,可减少土壤水分蒸发,起到保墒防旱作用。据测定,耙过的麦田比未耙的麦田土壤含水量增高20—31.8%,效果可以一直保持到4月份。(二)提高地温。据在田间测定,经过春耙的麦田,日平均地温比未耙的麦田增高0.4—1.5℃,有利于小麦生长,提前返青,促使麦苗早发。
Ding Ling rake wheat yield is very significant. Fengchuan Village, Yongxiang Commune, Luochuan County, implemented a harvesting of 14.5% more than the harrowing wheat fields and a spring harrowing of 100 acres for the An Shan Brigade of Jingzhao commune, an increase of 17.7% over the harrowing wheat fields. Top Ling rake wheat benefits are: (a) moisture and drought. After harrowing, breaking the soil compaction, loosen the topsoil, fill the cracks, can reduce the evaporation of soil moisture play a role in drought protection of soil moisture. It has been determined that the harvested wheat field raises 20-31.8% of the soil moisture content of harvested wheat fields without raking, the effect can be maintained until April. (B) to improve ground temperature. It is determined in the field, after harrowing spring wheat field, the average daily temperature than the harrow wheat field increased 0.4-1.5 ° C, is conducive to wheat growth, early greening, prompting the early emergence of wheat seedlings.