论文部分内容阅读
一、引言植物的生长发育,必须要由土壤内供给足够的水分,养料,才就实现。所以土壤的肥力与植物的关系是很密切的。从药材丰产栽培的事实也证明了这一点;土壤有效肥力的高低是决定产量高低的重要因素。而土壤中主要的养分,是氮,磷,钾三要素,但各种土壤的潜在程度是不同的,有的含量很高,有的含量却很低。特别是药用植物;生长的条件是比较复杂,绝大部分在山坡丘陵地带栽种,土壤的肥力差异比较显著,因此了解土壤性质与肥力的情况也就显得有必要了。同时由于植物在每个生
I. INTRODUCTION The growth and development of plants must be achieved by providing sufficient water and nutrients in the soil. Therefore, the relationship between soil fertility and plants is very close. The fact that it is cultivated from the high yield of medicinal herbs also proves this; the level of soil available fertility is an important factor that determines the level of yield. The main nutrients in the soil are nitrogen, phosphorus, and potassium. However, the potential levels of various soils are different, and some are high in content and some are low in content. In particular, medicinal plants; the conditions for growth are relatively complex, and most of them are planted on hilly and hilly areas. The differences in soil fertility are significant. Therefore, it is necessary to understand soil properties and fertility. At the same time because of the plants in every life