(2)The amount of nitrogen absorbed by 100 kg hay is 4.232 kg ,the amount of phosphorus absorbed by 100 kg hay is 0.2872 kg,the amount of potassium absorbed by 100 kg hay is 2.547 kg;
The method of fertilizer for high yield of seed manufacture is: breed:Xinjiangdaye alfalfa,basal fertilizer:the amount of nitrogenous fertilizer is 45 kg/hm2,phosphate fertilizer is 30 kg/hm2 ,potash fertilizer is 30 kg/hm2,rate of seeding is 2.25 kg/hm2,utilizes this combination,seed yield may get 545 kg/hm2·year ,and may get hay 1075 kg/hm2·year.
the CP,EE and Ca content of alfalfa hay treated by K_2CO_3 were significant higher than that of alfalfa hay processed by conventional method (P＜0.05),and NDF, ADF content were lower than that by conventional method (P＜0.05).
9 maintained its genus characteristics of high dry matter yield and quality. Its dry forage yield was 18000kg/hm 2 and seed production was 495.8kg/hm 2,improved 40% and 93.9% than P.maximum cv.Trichoglume respectively,crude protein (CP) contents was 7.90% (DM); acid-infertile tolerance?
This paper adopts the available digestable energy as the index to calculate and measure the forage-animal balance, and this method is compared with the method adopting the available dry forage (weight unit).
Based on the measurement data of dry forage yield and qualitative indices of alfalfa,their dynamic variation was simulated and analyzed by nonlinear function.
A correlation formula between population density of L. stictalis per 20 stems (x) and yield loss rate of dried hay (y) was formed: y=4.936 6x-0.850 9,r=(0.994 3), which has significant relativity.
A correlation formula between thrip population density per 20 stems (X) and yield loss rate of dried hay (Y) was created as follows: Y=0.1021X-2.2461, r=0.9874.Based on the direct benefits and control costs, the economic thresholds in controlling thrips under various field conditions were determined as follows: 560 thrips per 100 stems of the first cutting alfalfa in dry fields;
Furthermore,the DM yields of alfalfa would increase significantly(p<0.05)with only B(1.0kg/hm~2), Mo(100g/hm~2)or Zn(1.5kg/hm~2)fertilizer application too.
among the forages of the grass family, fresh and dry yield of every experimented variety could respectively reach 68～79 t/hm2,13～20 t/hm2,the fresh yield of forage2-china was the highest, reached 78.46 t/hm2, the dry yield of Lph 1407 was the highest,reached 19.39 t/hm2;
The average height of little crest grass with 3 years old was 85.4cm,fresh weight 1074.2g,dry weight 343.8g,yield of fresh grass 72.58t hm~(-2),yield of dry grass 23.2 t hm~(-2),output 93 thousand yuan hm~(-2).
3年生小冠花平均株高85.4 cm,单株鲜重1074.2g,单株干重343.8g,鲜草产量72.5 t hm-2,干草产量23.2 t hm-2,产值0.93万元hm-2。
Correlationship between forage yield and increasing years was curvilinear (y =-38.186x~2+841.86x +1154.7, R~2 = 0.4188**, P＜0.01), therefore the highest forage yield was achieved when alfalfa has been growing for 11 year.
RS and hay had similar values in the potential extent of digestion (PED) and digestion rate of PED (kd) of fibrous materials, but the discrete lag time for RS was lower than that for hay.
Neither the PED nor kd for RS and ABRS was influenced by ULB supplementation, but the kd for hay significantly increased due to ULB The lag time for hay was also shortened by the ULB feeding.
Top dressing a spray-irrigated pasture of orchardgrass with 125 t/ha of overwintered beef feedlot manure almost doubled the yield of dry forage: 6 353 kg/ha vs.
An increase in parotid mass, suggesting an increase in saliva production, could meet the liquid needs of the gazelles during feeding and rumination in poor and dry forage seasons.
Irrigated and highly fertilized alfalfa growing in the deserts of Southern Peru reached maximum growth rates of about 200 kg dry forage ha-1 d-1 during the summer period and of 150 kg ha-1 d-1 during winter.
The accumulation of organic matter to form an organic horizon on one of the Palace Leas meadow hay plots has resulted from the effects of ammonium sulphate application over a period of 86 years.
干草
hay
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