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作物和因子状态之间内在联系的一般规律用下式表述,称为作物因子状态偏产量势方程式。y=Y·A+CA=w·n·a·t·lY 是某品种在各因子均为最佳状态时的最大产量值;w、n、a、t、l 分别表示水、养、气、温和光各因子状态偏产量势;其乘积用 A 表示;y 是跟随 w、n、a、t、l 变动的产量;C 是校正值。因子状态偏产量势定义是:X 因子状态偏产量势=X 因子状态所对应的作物产量/作物最大产量各因子状态偏产量势值都在0—1的范围内变化。因子状态的内容有:(1)因子的若干数量的组合;(2)有关环境因素;(3)农业生产措施。因子状态的偏产量势值都是通过实验求得。实践证明,理论 A 值和实验值的变化趋势是一致的。作物因子状态偏产量势原理是把人类长期生产经验变为理论,为一项新的自然观。可广泛地应用于农业科学理论研究和生产实践中。由公式可推导出科学的土壤肥力定义,使作物栽培科学进一步发展。
The general law of the relationship between crop and factor status is expressed by the following equation, which is called the potential equation of crop yield status. y = Y · A + CA = w · n · a · t · lY is the maximum output value of a variety in the best condition of each factor; w, n, a, t, l, respectively, that water, , Mild light state of each factor partial yield potential; its product is expressed as A; y is to follow w, n, a, t, l changes in output; C is the correction value. Factor state partial yield potential is defined as: X factor state partial yield potential = X factor state corresponding crop yield / crop maximum yield each factor state partial yield potential values in the range of 0-1. The contents of the factor status are: (1) a combination of a number of factors; (2) the relevant environmental factors; (3) agricultural production measures. Partial factor potential state values are obtained experimentally. Practice has proved that the trend of the theoretical A value and the experimental value is consistent. The state-of-crop yield factor principle of crop factors turns the long-term human production experience into a theory and a new concept of nature. Can be widely used in agricultural science theory and production practice. The formula can be derived from the scientific definition of soil fertility, crop cultivation science further development.