Effects Of Different NManage On The Growth And Development And Yield Of Adzuki Bean

Test is operated in the specimens Park of Agricultural University of Hebei in summer 2011, and selected the early maturing variety JiHong 8937 that cultivated by Academy of agriculture and forestry of Hebei, and the content of soil organic matter is 20.27g/kg, the PH is 7.9, the alkali solution of N is 68.26mg/kg, the available P is 9.89 mg/kg, the K is 174.65mg/kg. This experiment uses the random block allocation that content 2 factors and 6levels, had a plot experiment in the field. It studied the effects that different application level of nitrogen and phosphorus on growth and yield of Adzuki Bean. The main results are as follows:When the conditions of Nitrogen fertilizer and phosphorus fertilizer are different, the appearance time of the physiological periods of Adzuki Bean without obvious differences follow fertilizer treatment. According to previous research, the change of bean physiological period is mainly effected by sowing date, sunshine, climate and other factors.In the case of different handling on Nitrogen and phosphorus, the trend that bean plant height will increase former and reduce later, relatively moderate fertilizer is more than small amount of and large amount of fertilization; In the case of low fertilizer treatment with bean, the stem diameter is higher than others treatments, and this are not consistent that phosphorus can promote strong stems, the reason possibly is about the using of N fertilizer; And the bean nodes on main stem and stem diameter has a similar change; nitrogen and phosphorus fertilizer on bean branches without regularity changes, its main effect factors may be varieties.Appropriate nitrogen and phosphorus fertilizer could promote plant nutrient absorption, thus increase the transformation of dry matter and improve the yield of dry matter. At the same time, plant good nutrition absorption can reduce soil nitrogen phosphorus content; The shortage of nitrogen and phosphorus nutrition not only cannot meet the need of plant growth and development, but also will cause the soil fertility become decreased; And using fertilizer too much will inhibit accumulation of plant dry matter, though it can maintaining soil fertility, but it will greatly increase the cost as well.The relationship of yield and fertilization of Adzuki Bean was parabola shape, the relation equation that amount of P and bean production is Y = -0.28X~2+27.72X+710, when P dosage is 49.5kg/hm-2,it will achieve the maximum output is 96.14kg/hm-2, the relation equation of N dosage and bean production is Y= -0.1183X~2+15.0833X+1357, when N dosage is 63.7324kg/hm2, it will achieve the highest yield is 1837.6485 kg/hm2.