控释复合肥对土壤某些生化性质的影响

Effects of Controlled Release Compound Fertilizers on Some Biochemical Properties of Soil

采用2种不同养分配比但总养分量相等的控释复合肥进行景天三七小区试验,并与总养分量相等的普通复合肥比较,研究相同养分配比的控释复合肥与普通复合肥及不同养分配比的2种控释复合肥对土壤某些生化性质的影响。试验结果表明,景天三七各生长期不同施肥处理的土壤养分含量以控释复合肥1(CRF1)和控释复合肥2(CRF2)处理较好,在整个生长期内都能满足景天三七对养分的需求;普通复合肥的养分在土壤中释放迅速,在景天三七生长后期出现脱肥现象;土壤酶的活性与土壤养分含量呈密切的相关性,可将其作为评价土壤肥力的指标。

The aizoon stonecrop plot experiment is carried out with 2 kinds of controlled release compound fertilizers which have different nutrient ratio but have same total amount of nutrient, and is compared with common fertilizer which has same total amount of nutrient, to study the effects of controlled release compound fertilizer and common fertilizer with same nutrients ratio and 2 kinds of controlled release compound fertilizer with different nutrients ratio on some biochemical properties of soil. Experimental results show that during each growth period of aizoon stonecrop, the nutrient content of the soil is treated with applying different fertilizers, and it has better nutrient content with the controlled release compound fertilizer 1 （CRF1） treatment and the controlled release compound fertilizer 2 （CRF2） treatment, throughout growth period, the requirements of aizoon stonecrop for nutrient can be satisfied; the nutrient of common fertilizer is released rapidly, in the late growth stage of aizoon stonecrop, the problems of short of fertilizer appears ; the activity of soil enzyme exhibits a close relationship with soil nutrient content, so it can be used as an indicator for evaluation of soil fertility.