CAJ | 학술논문

分析了湖南省早稻、中稻、晚稻、玉米、油菜、棉花、烤烟、红薯等8个主要农作物的2 459个 "3414"肥效试验结果, 获得了大量的土壤速效氮、磷、钾有效养分校正系数, 其中土壤有效磷校正系数平均值最高, 为161. 55%, 其次是速效钾的68. 30%, 最低的是碱解氮的38. 25%, 说明作物对土壤有效磷的利用率最高, 对土壤碱解氮的利用率最低; 土壤有效养分校正系数与对应土壤速效养分含量均呈极显著的负相关, 其中与速效钾含量的相关性最密切, 其次是有效磷和碱解氮; 以土壤速效养分含量为自变量x, 以对应的校正系数为因变量y, 回归分析建立的最佳数学模型均为双曲线, 其回归关系和拟合度均到达极显著水平; 数据来源于全省大样本的试验结果, 具有较强的代表性, 可以用于校正斯坦福施肥量估算公式中的有效养分校正系数值, 为精确估算主要农作物施肥量和制定施肥配方提供科学依据.
분석료호남성조도、 중도、 만도、 옥미、 유채、 면화、 고연、 홍서등8개주요농작물적2 459개 "3414"비효시험결과, 획득료대량적토양속효담、 린、 갑유효양분교정계수, 기중토양유효린교정계수평균치최고, 위161. 55%, 기차시속효갑적68. 30%, 최저적시감해담적38. 25%, 설명작물대토양유효린적이용솔최고, 대토양감해담적이용솔최저; 토양유효양분교정계수여대응토양속효양분함량균정겁현저적부상관, 기중여속효갑함량적상관성최밀절, 기차시유효린화감해담; 이토양속효양분함량위자변량x, 이대응적교정계수위인변량y, 회귀분석건립적최가수학모형균위쌍곡선, 기회귀관계화의합도균도체겁현저수평; 수거래원우전성대양본적시험결과, 구유교강적대표성, 가이용우교정사탄복시비량고산공식중적유효양분교정계수치, 위정학고산주요농작물시비량화제정시비배방제공과학의거.
In this study, 2 459 "3414" fertilizer efficiency experiment results on eight major crops such as the early rice, middle-season rice and late rice, corn, rape, cotton, flue-cured tobacco and sweet potato were analyzed, and soil available N, P, K nutrient correction factors were obtained. The average of the correction coefficient of available P in soil was 161. 55%, followed by available K which was 68. 30%, the lowest was alkali solution nitrogen which was 38. 25%. It showed that the utilization of available P in soil was the highest, the lowest utilization was soil alkaline hydrolysis N. Soil available nu-trients correction factors were all significant negative correlated to its corresponding soil available nutrient contents. Seting soil available nutrient content as the independent variable x, and the corresponding correction factor as the dependent variable y, regression analysis was simulated. It showed that the hyperbolic was the optimal mathematical model, in which the fit of the re-gression reached extremely significant level. This study was based on large samples which were strong representative and could be used for correction of effective nutrient coefficient values in Stanford fertilizer rate estimation formula, and could be used to accurately estimate fertilizer rate in the main crops and provide scientific basis for fertilizing formula.