The paper's hypothesis was that intercropping macadamia (Macadamia integrifolia Maiden & Betche) in an Arabica coffee (Coffea arabica L.) plantation would increase land‐use efficiency and economic results. An experiment was conducted in southeastern Brazil to evaluate the planting of macadamia intercropped into a declining adult coffee plantation where trees were pruned, removed, or neither on the payback period compared with a macadamia monoculture. The experiment was arranged in a randomized complete block design with six treatments and four replications. Treatments consisted of four systems of planting macadamia intercropped within a coffee plantation (T1–unpruned coffee trees; T2–side pruning of two coffee trees; T3–stumping of two coffee trees; T4–removal of one coffee tree), and a coffee monocropping and a macadamia monoculture planted where coffee crops were eradicated (macadamia monocropping) as control. We evaluated macadamia plant growth and economic results across four growing seasons and considered three macadamia plant arrangements. At 46 mo after planting, macadamia plants intercropped with unpruned coffee trees had lower plant height (28%) and trunk diameter (63%) than those planted in macadamia monoculture. Treatments T3 and T4 provided greater growth of macadamia plants. Coffee yield losses caused by pruning or removal of coffee trees were not significant, regardless of the macadamia plant arrangement used. The implantation of the macadamia intercropped with an inefficient adult coffee crop proved to be economically more advantageous than the implantation of a macadamia orchard in monoculture.

中文翻译：

---

澳洲坚果套种到效率低下的成年咖啡种植园中在经济上是有利的

本文的假设是，间作坚果（澳洲坚果少女＆Betche）在阿拉比卡咖啡（小粒咖啡L.）种植将提高土地利用效率和经济效益。在巴西东南部进行了一项实验，以评估间作种植在不断下降的成年咖啡种植园中的澳洲坚果种植，与澳洲坚果单一栽培相比，该种植园的树木在修剪期间没有被修剪，去除或完全没有树木。该实验以随机的完整区组设计进行安排，进行了六次治疗和四次重复。处理方法包括在咖啡种植园中种植澳洲坚果的四种系统（T1 –未修剪的咖啡树； T2 –修剪两棵咖啡树； T3 –修剪两棵咖啡树； T4 –去除一棵咖啡树）和单作咖啡种植了澳洲坚果单一栽培种，将咖啡作物被铲除（澳洲坚果单一种植）作为对照。我们在四个生长季节评估了澳洲坚果植物的生长和经济成果，并考虑了三种澳洲坚果植物的布置。种植后46个月，与未经修剪​​的咖啡树间作的澳洲坚果植物的植株高度（28％）和树干直径（63％）比澳洲坚果单一栽培的植物低。处理T3和T4提供了更多的澳洲坚果植物生长。无论采用何种澳洲坚果工厂布置，因修剪或砍伐咖啡树而导致的咖啡产量损失均不明显。在低效成年咖啡农作物间作的澳洲坚果的植入被证明比单一栽培中的澳洲坚果园的植入在经济上更具优势。套种有未修剪咖啡树的澳洲坚果植物的植株高度（28％）和树干直径（63％）比澳洲坚果单一栽培的植物低。处理T3和T4提供了更多的澳洲坚果植物生长。无论采用何种澳洲坚果工厂布置，因修剪或砍伐咖啡树而导致的咖啡产量损失均不明显。在低效成年咖啡农作物间作的澳洲坚果的植入被证明比单一栽培中的澳洲坚果园的植入在经济上更具优势。套种有未修剪咖啡树的澳洲坚果植物的植株高度（28％）和树干直径（63％）比澳洲坚果单一栽培的植物低。处理T3和T4提供了更多的澳洲坚果植物生长。无论采用何种澳洲坚果工厂布置，因修剪或砍伐咖啡树而导致的咖啡产量损失均不明显。在低效成年咖啡农作物间作的澳洲坚果的植入被证明比单一栽培中的澳洲坚果园的植入在经济上更具优势。