The weed biodiversity was decreased with the improvement of soil nutrient status. There were 3-5 weed populations in treatments NPK and NPK plus organic materials,and 6-8 populations in treatments CK,N,NK and NP.

• 随着土壤养分状况的改善,杂草的物种多样性逐渐减少,氮磷钾及其与有机物料配合施用处理(NPK、SNPK、M1NPK、M2NPK)的杂草种群为3~5个,对照及氮、氮磷、氮钾处理(CK、N、NP、NK)杂草种群为6~8个;