Effects of Intercropping Cassava with Pumkin of Different Densities in Cassava Fields on Crop Yield,Economic Efficiency and Land Productivity
In order to explore the efficient cassava-pumpkin intercropping mode suitable for Guangxi region,five treatments were set up in the experiment,which were cassava monoculture(C),pumpkin monoculture(plant spacing 60 cm,P60),and cassava intercropping pumpkin(three planting densities,pumpkin plant spacing were 40,60,80 cm,respectively,and were recorded as CP40,CP60,CP80),each treatment was repeated three times.The effects of pumpkin intercropping with different densities on yield,economic benefit and land productivity were studied.The results showed that plant height,stem diameter and number of tubers per plant under intercropping were lower than C treatment.The cassava yield and its components under intercropping were no significant effect compared with C treatment.The pumpkin yield of three intercropping patterns significantly reduced compared to P60 treatment,with pumpkin yield of CP60 being the least reduced.The total crop yield of the five treatments were in the order of CP60＞CP80＞CP40＞C＞P60.The total crop yield,total income and net income of three intercropping patterns were significantly higher than C and P60 treatments.The contribution of cassava to the total crop yield of intercropping system was bigger than pumpkin.The land equivalent ratios of three intercropping patterns were 1.68,1.82 and 1.69,respectively,which increased land equivalent ratio by 68％to 82％,indicted that the system had the intercropping advantage.The study showed that the cassava-pumpkin intercropping system with pumpkin plants spacing 60 cm was considered as the most suitable cassava-pumpkin intercropping pattern to promotion in Guangxi,which had the highest land equivalent ratio,high yield and economic efficiency.
万方数据
维普
