Study On Adaptation Of Sugarcane In Different Line Spacing To Intercropping Of Spring Soybean Under Mechanical Planting

To explore the optimum mode of line spacing adaptability of sugarcane intercropping soybeans under mechanical planting,combine agricultural machinery with agronomy to increase production efficiency and promote economic benefit.Beginning in 2015,fissure area design,intercropping model as the main factor,line spacing for the auxiliary factor,set four kinds of spacing as 1.1m,1.3m 1.5m.1.7m is analysed.(1)in the agronomic traits,the emergence of monoculture pattern,tillering,height of the line widening of the trend decreased,and intercropping with the contrary,showing the trend of the widening of the accompanying distance.The germination rate and tillering rate of intercropping treatment in Seedling were lower than monoculture.The plant height and the elongation at the tillering stage monoculture pattern were higher than the intercropping,then the intercropping pattern was restored and elevated.(2)Photosynthetic indicators:LAI is consistent in the monoculture and intercropping mode,and the widening of the accompanying distance is decreasing trend;chlorophyll in the monoculture pattern shows the increase of the accompanying distance,the LAI in the symbiosis period,the monoculture is higher than the intercropping pattern,later than the intercropping pattern.The photosynthetic rate,transpiration rate and stomatal conductance were shown in the wide line spacing,and the intercropping mode was higher than monoculture mode in the mature stage,while the intercellular C02 concentration was the contrary,in the narrow spacing.(3)The physiological index,the root vigor accompanied by the widening of the downward trend,intercropping treatment is contrary to the trend of widening the accompanying distance.(4)Soil properties,soil alkali nitrogen,available phosphorus,available potassium in the monoculture,intercropping,under the line is shown to increase the trend of the widening.The intercropping model improves the content of available phosphorus,available potassium and organic matter in soils.(5)Yield quality,cane yield intercropping mode is lower than monoculture mode,sucrose production monoculture 1.1m,intercropping 1.5m processing optimal,economic benefits of intercropping 1.5m processing max.The conclusionis applied to the mechanized production of sugarcane by the use of light energy utilization,profit,sucrose yield and optimum in the intercropping 1.5m processing.