氯化铵是我省近年才大量生产的主要氮肥品种之一。为了给它的迅速推广应用提供科学依据,1979年以来连续四年进行了氯化铵与其他主要氮肥品种的等氮量对比试验。结果说明,在石灰性土壤上施用于棉花,其肥效优于尿素和碳铵, 一、试验概况 小区试验分别在罗集公社保堤四队和肖巷二队、南湖原种场、丰乐公社迎丰二队及石牌公社红升四队多点进行。土壤为石灰性沙质壤土,pH8.2—8.8;棉花品种多为鄂光 Ammonium chloride is one of the major nitrogenous fertilizer species that mass-produced in recent years in our province. In order to provide a scientific basis for its rapid popularization and application, a comparison test of isophor nitrogen between ammonium chloride and other major nitrogenous fertilizers has been conducted for four consecutive years since 1979. The results show that the application of soil calcareous soil in cotton, its fertilizer efficiency is superior to urea and ammonium bicarbonate, the test profile plot test were Luoji commune Baodi four team and Shaw Lane two teams, Nanhu original seed market, Fengle commune Ying Feng two teams and Shipai commune Reds four more teams. Soil calcareous sandy loam soil, pH8.2-8.8; mostly cotton varieties E-light