Effects of Combined Application of Nitrogen and Phosphorus Fertilizers in Different Ratios on Farinograph and Extensograph Parameters of Zhengmai 9023 in Different Experimental Sites
Feng Li, Chenyang Wang, HE De-xian · Mailei zuowu xuebao · 2010
The effects of combined application of nitrogen and phosphorus fertilizers in different ratios on farinograph and extensograph parameters of Zhengmai 9023 were studied in Anyang,Xiayi,Luohe,Nanyang,and Xinyang of Henan Province.The results showed that experimental sites,nitrogen application rate and their interactions affected farinograph and extensograph parameters.Among them,experimental site had a highly significant effect on farinograph and extensograph parameters at 1% probability level,nitrogen application rate had a significant effect on development time,extensibility degree and extension rate at 5% probability level while effects of both phosphorus application rate and interactions of nitrogen and phosphorus fertilizers on farinograph and extensograph parameters were not significant.The study also showed that application of phosphorus fertilizer at reasonable rate could improve farinograph quality of Zhengmai 9023 when nitrogen application rate was fixed.Of those 5 experimental sites,farinograph and extensograph parameters were the best in Anyang.From the view of combined application effects of nitrogen and phosphorus fertilizers,processing quality of Zhengmai 9023 was the best only at the level of N 240 kg·hm-2 and P2O5 60 kg·hm-2.