Different Dosage Of Nitrogen And Phosphorus On The Double Low Rapeseed Material Accumulation And Feeding Supplies Quality Influence

In this paper, the double low rapeseed space 4 as test materials, by adopting the combination of field trial and indoor chemical analysis method, studied the nitrogen and phosphorus of double low rapeseed influence of forage quality and output. To double lew rape is used as forage cultivation to provide theoretical basis and technical guidance. The main results were as follows:1 A suitable amount of fertilizer nitrogen and phosphate fertilizer can effectively rape promote the growth of plant height and stem diameter, thus improve the dry weight per plant. Double low rape aboveground biological yield per plant dry weight and erly junction Angle as the highest. Nitrogen, phosphorus can promote double low rapeseed per plant dry weight and biological yield increase. Nitrogen (N) amount of p rate was 112.5 kg/hm2, (P2O5) of 90.0 kg/hm2, highest rape of upper straw biomass production.2 At different times, different rape plant in vivo NPK content, nitrogen content is the junction Angle> grey moss early stage> coated, phosphorus content is grey moss early phase of the coated>>junction Angle, the potassium content is coated> junction Angle> early grey moss period. Right amount of nitrogen fertilizer, phosphate fertilizer can improve rape nitrogen, phosphorus and potassium content in the body.3 Double low rapeseed crude fiber content in stem, leaf varied in different periods. Coated> leaf crude fiber content in the form of grey moss early stage> junction Angle, the coated> stem for early junction Angle> grey moss period.. High n application rate is helpful to reduce rape stem leaf of crude fiber, acid washing, neutral detergent fiber content, and n level low cellulose content is higher. P application of double low rapeseed crude fiber, acid washing fiber content in the stem leaf, smaller influence on neutral detergent fiber content.4 Double low rapeseed crude protein content in stem and leaf in early junction Angle is highest, lowest coated. With the increase of n application rate, stem and leaf crude protein content in unimodal curve changes, excessive nitrogen, plant protein content declined. Phosphorus is beneficial to increase the crude protein content of the stem and leaf protein content.5 Double low rapeseed plants within the soluble sugar content, reducing sugar content in grey moss period is highest, lowest coated. Increased nitrogen, soluble sugar content is lower. Increasing phosphate fertilizer application, soluble sugar content showed a trend of increase after the first drop, lower soluble sugar content under the highest application rate of phosphoric fertilizer.6 Double low rapeseed plants contain energy value was the highest in full bloom, minimum grey moss. A moderate amount of nitrogen, phosphorus, total energy plant. Nitrogen, phosphorus excess, plant energy decrease.7 Integrated nitrogen, phosphorus of double low rapeseed plant growth, dry matter accumulation and quality indexes of forage crude fiber, crude protein, soluble sugar, and energy, the influence of the experimental conditions, the double low upper straw as a forage grass utilization, in full bloom early-junction Angle high forage yield, fiber content is low, high nutritional value, can be used as for harvesting period. Quantity of nitrogen (N) of 75.0 kg/hm2-112.5 kg/hm2, phosphorus fertilizer (P2O5) of 60.0 kg/hm2-90.0 kg/hm2 is advisable.