Study On Production Performance And Economic Index Of Ryegrass Under Artificial Control

In recent years,with the rapid development of herbivorous animal husbandry in China,there is a great demand for high-quality herbage.As the main popularizing grass species,Medicago sativa in the north of China is confronted with many problems,such as the disadvantage of returning to green in the spring and the difficulty of adjusting hay in the rainy season,which makes it unable to undertake the task of “Regulating structure and ensuring supply”.For the use of soil arable land,there has been a shortage of arable land in recent years,exacerbating the shortage of pasture production.In the spring and winter seasons and during the prohibition and rest periods,it is also difficult for livestock to meet the demand for fresh grass.In addition,the scale of livestock raising in our country has also developed rapidly in recent years.While gradually meeting people’s increasing demands for livestock products,also indirectly led to the conflict between human and animal food increasingly prominent.In order to optimize and adjust the structure and reduce the cost of feeding forage for dairy cattle,the technology of producing and processing ryegrass in the north of China was popularized,it is of great significance to ensure the supply of forage in the locality and to realize the circular development of agriculture and animal husbandry.The purpose of this study was to explore the possibility of Lolium Perenne factory planting and factory production,to find out the optimum conditions for the growth of ryegrass in the artificial climate chamber,and to explore the ultimate density of planting under the optimum conditions,it provides a feasible theoretical basis for the large-scale production of ryegrass.The results are as follows:(1)According to the observation and determination of the yield and growth,the suitable growth condition of ryegrass in the artificial greenhouse is A2B2C2,A3B2C2:that is,the temperature is 20 °C ～ 25 °C,the soil humidity is 15%,the best growing environment is one where the light cycle is about 12 hours.Under this condition,ryegrass has the best growth and development,high nutritive value and good feeding quality.(2)Under the condition of S2L3,the ryegrass has high nutritive value,high relative feeding value and good yield under the planting density of 0.6 g/DM ～ 0.65g/DM and row spacing of 0.60 dm.(3)The results show that the large-scale production of ryegrass will be profitable when the economic input of ryegrass industrialization is considered.At the same time,considering the output of the plantation in the artificial climate chamber,the factory production is still very feasible,it is possible to optimize the planting conditions,reduce the input cost of raw materials and select more high-quality fast-growing forage varieties for the industrialization of ryegrass.