论文部分内容阅读
本文取材于中国农业科学院红壤试验站所布置的生土熟化长期试验。三种不同母质的生土经过５年的熟化后，土壤理化性质发生了很大的变化，不同土壤和处理的作物产量也有较大的差异。土壤有机质、全氮及全磷等养分是不断增加的，受土壤类型、熟化措施及作物秸杆的归还与否等因素的影响。酸性土壤的ｐＨ有下降的趋势。紫色土的ｐＨ值则随着熟化的进行逐步下降，向有利于植物生长的方向发展。酸性土壤的阳离子交换量在熟化过程中是逐步增加的，而紫色土则是逐步减少。在熟化开始时，作物产量主要决定于土壤类型，但５年后，它不仅与土壤类型有关，而且也与熟化措施明显相关。
This paper is based on the long-term experiment of soil-curing matured by Red Soil Experimental Station of Chinese Academy of Agricultural Sciences. The soil physicochemical properties of the three different parent materials after five years of maturation have undergone great changes, and the yields of different soils and treated crops also differ greatly. Soil organic matter, total nitrogen and total phosphorus and other nutrients are increasing, depending on the type of soil, maturing measures and crop straw returned or not and other factors. The pH of acidic soils tends to decrease. Purple soil pH with the gradual decline of maturation, in favor of plant growth direction. Acidic cation exchange capacity in the maturation process is gradually increased, while the purple soil is gradually reduced. At the beginning of ripening, the crop yield mainly depends on the soil type, but after 5 years it is not only related to the type of soil but also to the ripening measures.