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本文研究了吉林省西部地区砂质石灰性草甸黑钙土上几种轻作方式中不同茬口土壤的各种酶活性强度、土壤肥力状况与作物产量间的相互关系。结果表明,凡插入绿肥(草木犀或油菜)作物的,无论土壤酶活性、土壤肥力状况以及作物产量都是最好的,而对照(轮作中无绿肥作物)无论土壤酶活性、肥力状况及作物产量都是最差的;酶活性与各项肥力指标及产量的关系,以过氧化氢酶、脲酶、磷酸酶为最密切,多酚氧化酶、转化酶的关系不大;翻压草木犀第二年种玉米,第三年种高粱,玉米增产51％,高粱增产37％;从用地及养地角度来看,粮草轮作周期以三年为宜,同时还应特别重视配施磷肥。
In this paper, we studied the relationship between various enzyme activities, soil fertility and crop yield in different cropping systems in calcareous soil of calcareous calcareous soil in western Jilin Province. The results showed that no matter what soil enzyme activity, soil fertility status and crop yield were best, crops with green manure (Rhizoma Oleracea or Rapeseed) were inserted, while the control (no green manure crop in rotation), regardless of soil enzyme activity, fertility and crop The yield was the worst; the relationship between enzyme activity and various fertility indexes and yield, with catalase, urease, phosphatase as the closest, polyphenol oxidase, invertase; Two years of corn, the third year of sorghum, corn yield 51%, sorghum yield 37%; from the point of view of land and raising land, the forage rotation period of three years is appropriate, but should also pay special attention to the allocation of phosphate fertilizer.