Effects of Different Controlled-release Compound Fertilizers on Wheat Growth,Nitrogen Uptake and Utilization in Eastern Shandong Province
The wheat variety"Jiemai 22"was treated in a randomized block group field trial with loss-controlled-release compound fertilizer(CRF1),peptide-chelating controlled-release compound fertilizer(CRF2),nitro double-effect controlled-release compound fertilizer(CRF3),urea-formaldehyde controlled-release compound fertilizer(CRF4)and four single-compound fertilizers(CCF1,CCF2,CCF3,CCF4)to screen out suitable controlled-release compound fertilizers for winter wheat in eastern Shandong province.Common compound fertilizers were formulated with N of240 kg/hm2,urea,calcium superphosphate and potassium chloride according to the nutrient content of the controlled-release compound fertilizers.The controlled-release compound fertilizer treatments were used in full application,the nitrogen of single-compound fertilizers was applied at the pre-sowing and pulling-out stages with 1:1 ratio,the phosphorus and potassium fertilizers were applied once basal application,and the effects of the treatments on the number of tillers,dry matter accumulation,yield and nitrogen fertilizer utilization at maturity of winter wheat in eastern Shandong province were studied.The results showed that compared with the several control,the increase in dry matter accumulation of wheat with CRF1 and CRF4 was significantly higher than those of the other two kinds,4.87％and 3.52％,respectively;the number of tillers of wheat single-plant tillers into spikes and the tiller into spikes rate of wheat with CRF4 were the highest,5.00 and 59.35％,respectively,which was good for the construction of high-yielding groups of wheat;the effective nitrogen supply of soil in the treatment of controlled-release compound fertilizers was balanced in the whole life cycle of wheat,which could meet the nitrogen demand of the whole life cycle of wheat,and CRF1 and CRF4 had a better performance;compared with the control,nitrogen utilization and nitrogen uptake efficiency increase of CRF1 and CRF4 were significantly higher than those of the other two kinds of controlled-release compound fertilizer treatments,which could better promote nitrogen absorption and utilization of wheat Compared with the control,the controlled-release compound fertilizers could significantly improve wheat yield and nitrogen utilization.CRF1 and CRF4 were more suitable for the cultivation of winter wheat in eastern Shandong province.In conclusion,loss-controlled-release compound fertilizers and urea-formaldehyde controlled-release compound fertilizers could effectively improve the yield of winter wheat in Eastern Shandong Province with greater potential.
Controlled-release compound fertilizerswinter wheatgrowthyieldnitrogen utilizationEastern Shandong Province
万方数据
维普
