CAJ | 학술논문

对恩施州烟田养分平衡状况调查统计分析认为该区域养分表现为氮素基本持平,略有亏损,磷钾均有盈余,施肥上应遵循“适度增氮、稳磷钾”的原则.建议提高追肥比例和次数,后作经济作物,提高养分利用率,降低残留量;适度降低化肥投入比例,防止土壤酸化;提高有机肥配比,重视施用农家肥,培肥土壤;增强烟秆生物有机肥和绿肥的推广力度.
대은시주연전양분평형상황조사통계분석인위해구역양분표현위담소기본지평,략유우손,린갑균유영여,시비상응준순“괄도증담、은린갑”적원칙.건의제고추비비례화차수,후작경제작물,제고양분이용솔,강저잔류량;괄도강저화비투입비례,방지토양산화;제고유궤비배비,중시시용농가비,배비토양;증강연간생물유궤비화록비적추엄력도.
Analysis of nutrient balance of tobacco field in Enshi was carried out. Result showed that: nitrogen was basically in equilibrium, while phosphorus and potassium were more than needed. Fertilization of Enshi tobacco-growing field should follow a principle of increasing nitrogenous fertilizer, stabilizing phosphate and potash fertilizer. Increasing topdressing ratio and the times, and cropping economic plants was suggested to improve nutrient utilization and reduce residue. Reducing chemical fertilizer input moderately can prevent soil acidification. Increasing organic fertilizer, especially manure, and applying tobacco straw bioorganic manure and green manures were proposed to realize tobacco-ecological nutrient circulation.