摘要
【目的】探明生态配方肥不同施用量和不同挂果数对桂热芒82号芒果产量和经济效益的影响,以确定广西右江河谷芒果产区适宜的芒果生态配方肥施用量和相应的适宜留果数。【方法】以平均冠幅为3m左右的7年生芒果树为材料,通过在田东芒果示范基地进行不同施肥量和挂果数配置处理芒果植株的大田试验,测定了单株产量、平均单果重、产值和投入产出比、实测单位面积(667m^2)产量以及生长指标。【结果】于采果后以每株施20kg"中有"牌有机肥、1.5kg"广宝"复合肥,第二次生理落果结束后每株施1.5kg"广宝"复合肥作壮果肥,单株留果数80个时,获得了较高的单株产量和最高的经济效益,其投入产出比为1:8.04;而对应的实收单位面积(667m^2)产量亦达到了较高产量水平和最低投入产出比。在不同施肥量与挂果树配置中,单株产量随施肥量增加而增加,株高、冠幅和茎围的增长量与产量变化趋势相似;相同的挂果数量时,相邻施肥量梯度之间的单株产量差异显著性极小。适宜的挂果量可保证在中等施肥量范围内获取较高的单株产量,降低生产成本和提高肥料利用率。【结论】广西百色右江河谷地区芒果生产上采果后在施足20kg"中有"牌有机肥和1.5kg"广宝"复合肥基础上,于第二次生理落果结束后施用1.5kg"广宝"复合肥和保留较适宜的80个单株挂果数,能获得较高的产量和经济效益。
[ Objective ]The purpose of this study was to investigate the effects of different fertilizer application rates and different stay fruit per plant on fruit yield and economic benefits for mango varieties （Mangifera indica L.）, Guire-82, which made us to discuss a reasonable fertilizer rate and the best fruit remaining number for the mango production in Youjiang Valley of Guangxi province. [ Method ]A field contrast experiment was conducted with mango varieties, Guire-82, seven-year-old fruit trees, with an average crown width of 3.0 meter （m）, to evaluate the allocation effects of different fertilization rates and different stay fruit on fruit yield per plant, average fruit weight, output value, input-output ratio, harvested yield per unit acre and growth in- dex. Appropriate fruit remaining number cooperated with moderate fertilizer rate could ensured to obtain higher yield and lower production cost, and improve the fertilizer utilization ratio. [ Result ]The results showed that, adopting the fertilizer application of 20 kilogram （kg） ＂Zhongyou kilogram （kg） ＂Guangbao＂ compound fertilizer for posthavest fertilization, compound fertilizer, presented a better fruit yield per paint and the most organic fertilizer per plant and 1.5 and 1.5 kilogram （kg） ＂Guangbao＂ significant economic benefits when plant fruit number stayed at 80 per tree after the second physiological drop, with the input-output ratio of l：8.04;and that of harvested yield per unit acre also gained similar fruit yield levels and input-output ratio. The fruit yield in- creased with the fertilizer application rates, and height, breadth and stem girth, along with the allocation of fertilizer rate and fruit remaining number per plant, and the variation tendency in their growth amount is about the same, while their growth rate were not obvious change trends, while no statistically significant differences were observed in the closed fertilizer application rates when fruit number stay at the the same level. Appropriate fruit
出处
《广西农学报》
2016年第5期25-32,共8页
Journal of Guangxi Agriculture
基金
国际农发基金贷款广西农业综合开发与利用项目(合同编号:L-I-CN855)
关键词
桂热芒82号
施肥量
单株留果量
投入产出比
Guire-82
fertilizer application
fruit quantity per plant
input-output ratio
