红菜薹废弃物还田对四季豆产量和养分累积的影响

Effects of Brassica campestris L.ssp.chinensis var.utili Tsen et Lee waste returning on yield and nutrient accumulation of kidney bean

通过田间试验研究了红菜薹(Brassica campestris L. ssp. chinensis var. utili Tsen et Lee)废弃物还田以及化肥减施对四季豆产量和养分累积的影响。结果表明,在常规施肥的基础上,红菜薹废弃物半量和全量还田四季豆产量分别增加了13.41%和29.43%,与红菜薹废弃物全部还田相比,全部还田+化肥用量减施30%使得四季豆产量降低了25.41%;与单施化肥相比,全部还田+化肥用量减施30%处理四季豆生物量增加了9.38%。红菜薹还田氮素、磷素和钾素累积量分别较单施化肥处理增加了18.72%~32.55%、6.35%~38.22%和5.73%~41.87%,且富集的氮、钾主要存在茎、叶片和果实中。

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 potassiumaccumulation 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.