Abstract: Field experiment was carried out to study the effects of Brassica campestris L. ssp. chinensis var. utili Tsen et Lee waste returning and fertilizer reduction on yield on yield and nutrient accumulation of kidney bean. The results showed that compared with conventional fertilization, the yield of kidney bean increased by 13.41% and 29.43% with the half and all Brassica campestris L. ssp. chinensis var. utili Tsen et Lee waste returning and conventional fertilization, respectively. On the basis of returning all the waste of Brassica campestris L. ssp. chinensis var. utili Tsen et Lee, the yield decreased by 25.41% of the treatments with 30% reduction of chemical fertilizer and all waste returning. The biomass increased by 9.38% of the 30% reduction of chemical fertilizer and all waste returning treatments comparing to conventional fertilization. When compared with conventional fertilization, the nitrogen, phosphorus and potassium accumulation increased by 18.72%~32.55%, 6.35%~38.22%, 5.73%~41.87% of waste returning treatments, and the nitrogen and potassium mainly existed in stems, leaves and fruits.

Key words: Brassica campestris L. ssp. chinensis var. utili Tsen et Lee waste, nutrient accumulation, field returning, chemical fertilizer reduction