一、植物生长与生长方程植物生长的全过程一般都要经历从慢到快、又从快到慢的过程,在总生长量一时间的坐标系中成“∫”形曲线。这就是通称的“∫”形生长。为了探索植物生长的规律和模拟生长过程,曾有不少人提出过关于生长的学说,如有机生长律等等,但往往与实际有较大差距,不合实用。随着电子计算机的发展,人们对从生长理论推导生长方程的兴趣逐渐减退,转而采用数学模型来模拟的办法。这种办法一般能适合实际的需要,所以近年来在森林经营等方面获得了广泛的应用。但是它只适于 First, the plant growth and growth equation Plant growth generally go through the entire process from slow to fast, and from fast to slow process, the amount of total growth in a time coordinate system into a “∫” -shaped curve. This is what we call “∫” shaped growth. In order to explore the law of plant growth and to simulate the growth process, many people have put forward the theory of growth, such as organic growth law and so on, but often have a big gap with the actual, impractical. With the development of electronic computers, people gradually reduce their interest in deriving their growth equations from growth theory, and instead use mathematical models to simulate them. This approach is generally suitable for practical needs, so in recent years in forest management has been widely used. But it is only suitable