In order to explore the effects of different tillage modes on the nutrient content and yield of maize stems and leav-es in arid agricultural areas of Hexi oasis,this experiment combined two tillage modes of no-tillage(NT)and traditional tillage(CT)with three planting modes of wheat-corn intercropping(W/M),winter rapeseed-corn rotation(W-G→M)and wheat-corn rotation(W→M)to study the effects of six different treatments on the N,P,K and organic carbon(OC)content of stems and leaves and yield of maize.The results showed that the N,P,K content of leaf,N and K content of stem of NT treatment were 13.54%,26.66%,8.70%,8.00%and 12.93%higher than those of CT treatment in maize growth period under W/M mode,respectively.Under W-G→M mode,the leaf P,K,stem N,P,K and OC of NT treatment were 9.79%,14.72%,8.06%,14.13%,5.45%and 0.44%higher than those of CT treatment,respectively.Under W→M mode,leaf P,K,OC,stem N,K,OC of NT treatment were 4.24%,3.82%,6.47%,13.21%,15.35%,0.05%higher than CT treatment,respectively.Compared with rotation,stem N,K and OC of W/M were 1.16%、9.09%and 12.38%higher than those of W-GM respectively,which were 7.80%,3.66%and 1.10%higher than W→M model.the leaf N,P,OC content and stem P content of W-G→M mode were 0.07%,5.76%,2.26%and 5.72%higher than those of W→M mode,respectively.At maturity stage,the average yield of maize under NT treatment was 8.02%higher than that under CT treatment,and the LER under W/M mode were all greater than 1,indicating that NTW/M performed better.This study found that the no-tillage is beneficial to increase the nutrient content of maize stem and leaf,and intercropping is beneficial to increase crop yield.Therefore,no-tillage wheat-maize intercropping mode can be popularized in Hexi irrigation area.
维普
万方数据
