Cesar J. da Silva, Danilton L. Flumignan, Sálvio N. S. Arcoverde, Éder Comunello
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引用次数: 0
摘要
近年来,巴西南马托格罗索州的甘蔗种植面积显著增加,为了满足糖厂的需求,采用适应品种已被证明是一项基本策略,并结合灌溉的使用,特别是在缺水时期。研究了4个甘蔗品种(CTC 4、RB966928、RB975201和RB92579)在灌水和不灌水条件下的生长和产量。实验在巴西MS Dourados的Embrapa Western Agriculture (Embrapa Agropecuária Oeste)进行。采用2 × 4阶乘方案的随机区组设计,3个重复。分别在种植后90、150、210、270、330和390 d (DAP)测定茎高、茎粗、叶面积指数(LAI)和干生物量。土壤覆盖百分比(%SC)通过无人机拍摄的航空图像确定,从种植到最大土壤覆盖进行评估。在390 DAP(收获)时,对总可采糖(TRS)、秸秆m-1数、秸秆(STY)和糖(SGY)产量进行了评价。RB975201品种在灌水和不灌水条件下的株高、茎粗和叶面积增长量最高,CTC 4最小。灌溉生产系统提高了甘蔗品种的茎长、叶面积指数和土壤覆盖度,增加了m-1、STY和SGY的茎长,以RB92579和RB975201品种最为突出。
Growth and production of sugarcane varieties under supplementary irrigation and no irrigation
ABSTRACT The area cultivated with sugarcane in Mato Grosso do Sul, Brazil, has increased significantly in recent years, in which to meet the demand of the mills, the use of adapted varieties has proved to be a fundamental strategy, combined with the use of irrigation, especially in periods of water deficit. The study aimed to evaluate the growth and yield of four sugarcane varieties (CTC 4, RB966928, RB975201, and RB92579) in plant cane cultivated with and without irrigation. The experiment was conducted at Embrapa Western Agriculture (Embrapa Agropecuária Oeste) in Dourados, MS, Brazil. A randomized block design arranged in a 2 x 4 factorial scheme with three replications was used. At 90, 150, 210, 270, 330, and 390 days after planting (DAP), stalk height and diameter, leaf area index (LAI), and dry biomass were evaluated. The soil cover percentage (%SC) was determined through aerial images taken with a drone, with evaluations made from planting to the maximum soil cover. Total recoverable sugar (TRS), number of stalks m-1, stalk (STY), and sugar (SGY) yield were evaluated at 390 DAP (harvest). The RB975201 variety has the highest growth in height, stem diameter, and LAI when grown under irrigation or without irrigation, and the CTC 4 variety has the smallest. The irrigated production system increases the growth of stalks, LAI, and degree of soil cover for the sugarcane varieties in plant cane and a greater amount of stems m-1, STY, and SGY, highlighting the varieties RB92579 and RB975201.
期刊介绍:
A Revista Caatinga é uma publicação científica que apresenta periodicidade trimestral, publicada pela Pró-Reitoria de Pesquisa e Pós-Graduação da Universidade Federal Rural do Semi-Árido – UFERSA, desde 1976.
Objetiva proporcionar à comunidade científica, publicações de alto nível nas áreas de Ciências Agrárias e Recursos Naturais, disponibilizando, integral e gratuitamente, resultados relevantes das pesquisas publicadas.