Research And Development Of Nutrient Uptake Regular And Specific Fertilizers To Summer Maize And Winter Wheat In Guan Zhong Area

1. Nutrient Uptake and Yield Responses to Winter Wheat Specific FertilizersOne-year field experiment from 2008 to 2009 was conducted to investigate effects of different winter wheat specific fertilizers on nutrient uptake, yield and profit, which was aimed to provide a theoretical foundation for development of winter wheat specific fertilizers in Guan-Zhong area. With sufficient nutrient supplying, to add more nitrogen in late stage and legitimately increase phosphorous and potassium supplying is an effective way to higher the winter wheat yield. In conclusion, the results showed that wheat grain yield exceeded 6300 kg/ha what is highest yield and highest profit with nitrogen 150 kg/ha, phosphorous and potassium 100 kg/ha, making 38.4% increase and 38.8% income compare to the treatment of the used fertilizer.2. Nutrient Uptake and Yield Responses to Maize Specific FertilizersExperiment from June to October in 2009 was conducted to investigate effects of different maize specific fertilizers on nutrient uptake, yield and profit, which was aimed to provide a theoretical foundation for development of winter wheat specific fertilizers in Guan-Zhong area. With sufficient nutrient supplying, to add more nitrogen in late stage and legitimately increase phosphorous and potassium supplying is an effective way to higher the maize yield. In conclusion, the results showed that wheat grain yield exceeded 7600 kg/ha what is highest yield and highest profit with nitrogen 180 kg/ha, phosphorous 50 kg/ha and potassium 100 kg/ha, making 25.5% increase and 14.2% income compare to the treatment of the CK fertilizer.3. The Sales Situation Investigation of Compound in Guan Zhong Area.Experiment from Aug. to September in 2009 at Yang Ling, Chen Cang, He Yang and from Oct. to Dec. in 2009 at Yang Ling, He Yang, Wu Gong, Fu Feng, Bai Shui was conducted to investigate the name, producing area, price, nutrient proportion, packing specification, sales, applicable crops and method of the compound by interviewing the fertilizer sales department. In conclusion, the S.C.F compound own the major market share, it is about Yang Ling 25.8%, He Yang 33.2%, Wu Gong 18.9%, Fu Feng 22.4%, Bai Shui 9.1%, the general type compound is respectively 20%,57.7%,23.6%,45% and 72.8% in Yang Ling, He Yang, Wu Gong, Fu Feng and Bai Shui, the higher share, the lower usage rates of the Specific Fertilizers.