甘蔗马铃薯间套种不同覆盖栽培模式研究

目的]研究甘蔗马铃薯间套种不同覆盖栽培模式对马铃薯、甘蔗生长及产量的影响,为广西赤红壤蔗区土壤条件下甘蔗马铃薯间套种高效模式提供参考.方法]采用田间试验方法,间套种设置常规土栽、盖薄土叶、无土厚叶、薄土白膜等4个处理模式和无间套种作对照(CK),研究不同覆盖栽培模式马铃薯和甘蔗生长及产量水平.结果]增加覆盖的甘蔗马铃薯间套种模式均比常规土栽模式显著增产,薄土白膜模式、薄土叶模式和无土厚叶模式比CK分别增25.39%、19.95%和13.51%,其中又以盖薄土加地膜模式马铃薯产量最高,效益最好.而在广西赤红壤蔗地甘蔗间套种马铃薯不同覆盖栽培未见对甘蔗产量及品质有影响,粮食作物马铃薯的收获有利于缓解蔗粮争地矛盾,增加蔗地单位面积收益,提高蔗农收入,值得在广西蔗区推广.结论]在广西赤红壤蔗地甘蔗间套种马铃薯未见对甘蔗产量品质有影响,而间套种马铃薯采用盖薄土加地膜模式马铃薯产量最高,效益最好.

Different cover cultivation models of sugarcane-potato interplanting

【Objective】This research aimed to study the influences of different cover cultivation models on sugarcane-potato interplanting and its effect on growth and yield of sugarcane and potato in order to provide references for designating the perfect sugarcane-potato intercropping model suitable for planting on latosolic red earth areas in Guangxi. 【Method】A field experiment was conducted in Long’an County， Guangxi； five treatments， viz. conventional cultivation， cover with thin soil and leaves （TSL）， cover with thick leaves （CTL）， cover with thin soil and white mulch （TSM）， and no interplanting （CK）， had been designed to research the growth and yield of potato and sugarcane in different cover cultivation models.【Result】The results showed that the potato and sugarcane yield of all sugarcane-potato intercropping models with coverage were increased significantly compared to the conventional cultivation model （CK） in the given conditions. Compared to those of the CK， the potato yields of TSM， TSL， and CTL increased by 25.39， 19.95， and 13.51%， respectively； amongst the listed categories， TSM treatment had the highest yield and the best benefits. Sugarcane yield and quality were not affected by the interplanting model with different covers on the latosolic red earth of Guangxi. On the other hand， the potato grown from intercropping with sugarcane helped to resolve the limited planting areas between sugarcane and grain， which increased the unit area yield of sugarcane and improved farmers’ income. 【Conclusion】Sugarcane yield and quality were not affected by intercropping with potato on latosolic red earth areas in Guangxi； the sugarcane interplanting potato model with thin soil and added cover resulted with the highest potato yield and the best benefits.