绿色施肥条件下单作胡萝卜根系生产力及优化经济效益研究

Pub Date : 2023-09-01 DOI:10.1590/1983-21252023v36n310rc
I. A. D. S. Freitas, F. B. Bezerra Neto, J. D. Lima, J. P. P. D. Silva, R. C. Ferreira, N. M. Guerra
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引用次数: 0

摘要

摘要半干旱地区胡萝卜科学研究的一大挑战是,通过优化Caatinga生物群落中的自发物种,如毛木玫瑰(Merremia aegyptia L.)和公鸡树(Caltrophis procera Ait.)的绿肥用量,获得最佳的生产特性和经济条件。因此,这项工作的目的是在半干旱环境中,在两个种植季节,用这些自发物种的合理生物量施肥,从农业和经济角度优化单作胡萝卜根及其成分的生产。实验设计为随机完全区组设计,共有五次治疗和五次重复。处理包括等量的毛木玫瑰和公鸡树生物量,在干燥的基础上分别为16、29、42、55和68吨ha-1。在每个实验中,额外种植一种不施肥的胡萝卜处理(绝对对照),与其他处理进行比较,以确定最大的物理和经济效益。胡萝卜施肥是在土壤中加入48.87t ha-1的埃及伊蚊和C.procera干生物量,以获得最大的优化生产效率(商业生产力)。当向土壤中添加49.64t ha-1的埃及伊蚊和C.procera干生物量时,胡萝卜种植的最佳农业经济效益(净收入)最大。利用Caatinga生物群落中这些自发物种的生物量作为绿肥,是晚香玉生产者在半干旱环境中单作的一项可行技术。
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Productivity and optimized economic efficiency of carrot roots in monocropping under green manuring
ABSTRACT A great challenge of scientific research with carrot in semi-arid regions is obtaining the best productive characteristics and economic conditions by optimizing the green manure amounts using spontaneous species from the Caatinga biome, such as hairy woodrose (Merremia aegyptia L.) and roostertree (Calotropis procera Ait.). Therefore, this work aimed to agronomically and economically optimize the production of carrot roots in monocropping and of their components when fertilized with equitable biomass amounts of these spontaneous species in two cropping seasons in a semi-arid environment. The experimental design was a randomized complete block design, with five treatments and five replications. The treatments consisted of equitable amounts of hairy woodrose and roostertree biomass in amounts of 16, 29, 42, 55, and 68 t ha-1 on a dry basis. In each experiment, an additional carrot treatment without fertilizer (absolute control) was planted for comparison with the other treatments to determine maximum physical and economic efficiency. Carrot fertilization was performed with the incorporation of 48.87 t ha-1 of M. aegyptia and C. procera dry biomass into the soil to obtain the maximum optimized productive efficiency (commercial productivity). The maximum optimized agroeconomic efficiency (net income) of carrot cultivation was obtained when 49.64 t ha-1 of M. aegyptia and C. procera dry biomass was added to the soil. The use of biomass from these spontaneous species from the Caatinga biome as green manure is a viable technology for tuberose producers in monocropping in semiarid environments.
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