1-MCP和MA包装南水梨果实贮藏效果的影响

以南水梨果实为试材,分别研究了1-MCP处理对市售白袋和绿袋包装果实的冷藏期和货架期贮藏的果肉硬度、可溶性固形物(TSS)、可滴定酸含量和细胞膜相对透性以及果心褐变、果实腐烂和果柄保鲜的影响.结果表明:1-MCP处理在贮藏前期对南水梨的硬度和酸含量有一定的保持作用,抑制果肉细胞膜透性升高,抑制了TSS升高,有利于果柄保鲜,抑制了果心褐变,但对腐烂无明显作用.白袋的保鲜效果优于绿袋.     

基于增量包法的耕地质量年度更新评价研究--以湖南省湘乡市为例

依据《农用地质量分等规程》,以湘乡市2014年度变更调查数据及2013年耕地质量等别评价结果为基础,在Arc GIS10.2操作平台上基于增量包法提取质量突变耕地,并对突变耕地进行耕地质量评价,形成2014年度湘乡市耕地质量等别年度更新评价成果。针对变化耕地的面积和质量变化趋势进行分析,并提出湘乡市耕地利用与保护建议。     

金秋梨无公害化生产关键技术

金秋梨无公害化生产过程中,合理使用无公害肥料、无公害农药,以及无公害化采收、包装与贮运技术都十分重要。从实践中研究总结了金秋梨无公害肥料的使用原则、方法及用量,无公害农药的使用标准,金秋梨果品无公害化采收、包装与运输的技术。     

应用湿冷与臭氧技术贮藏保鲜金柑的研究

采用湿冷、臭氧及包装三结合的先进、安全、实用的保鲜新技术,解决金柑保鲜难题。在冷库相对湿度控制在85%~90%、温度控制在5~7℃、臭氧定期灭菌条件下,保鲜期可达120d,失重率在10%以内,好果率90%左右;简易贮藏库相对湿度控制在85%、臭氧定期灭菌,保鲜期可达75d,失重率在10%左右,好果率90%以上,而且投资省,节能,便于推广应。     

Effects of Active Modified Atmosphere Packaging on Postharvest Quality of Shiitake Mushrooms (Lentinula edodes) Stored at Cold Storage

The effects of active modified atmosphere packaging (MAP) on the postharvest quality of shiitake mushrooms stored at cold temperature (4°C) were investigated. The gas components were 2% O2+7% CO2 (MAP1), 2% O2+10% CO2 (MAP2) and 2% O2+13% CO2 (MAP3), respectively. The results showed that active MAP could extend the shelf-life of shiitake mushrooms to 17 d and the concentration of carbon dioxide could influence the postharvest quality of shiitake mushrooms. MAP2 treatment inhibited the increase in respiration rate and malondinaldehyde (MDA) contents, delayed the decrease in firmness, soluble sugar and vitamin C, and obviously reduced the activity of polyphenol oxidase (PPO) and the degree of browning, therefore maintaining better quality.     

一种广谱微生物消毒剂过硫酸氢钾复合粉的稳定性研究

为确定过硫酸氢钾复合粉的有效期和包装运输条件,以电位滴定法和碘量法测定过硫酸氢钾复合粉中氯化钠和有效氯的含量,并分别用影响因素试验、加速试验和室温长期留样试验对过硫酸氢钾复合粉进行稳定性研究。影响因素试验结果表明过硫酸氢钾复合粉对湿度较敏感,6个月加速试验的结果显示双层铝箔纸可以作为合适的包装材料,室温留样1年后,样品各项检测指标均符合质量标准的规定。稳定性试验结果表明本品在密闭、遮光的贮存条件下性质稳定,室温下贮存期可暂定为2年。     

Application of Wavelet Transform to De-noising Method

The wavelet transform is a new subject developed quickly in the past ten years. Compared with the Fourier transform, the wavelet transform is a part of time-frequency transform. The most important character is that it can be used to transform a signal into basic units at different scales and location, each unit represents a component of original signal difference from others. The wavelet transform has been proven to be a powerful and efficient tool for processing signal due to this character. This paper introduces the de-noising principles of the wavelet transform. It is proved to be an effective method by the simulating analysis.     

袋控肥对吐鲁番无核白葡萄产量品质的影响

解决新疆砂石化土壤漏肥严重的问题,力求在吐鲁番无核白葡萄生产上做到节约肥料、节省人工成本及环保;验证袋装缓控释肥在吐鲁番无核白葡萄生产上的效果.以常规施肥方法为对照,通过大田试验研究带孔的牛皮纸袋装肥料对葡萄产量和品质,及光合作用、养分吸收和干物质累积等的影响.与当地常规施肥方式相比,牛皮纸袋包装施肥方式增产17.4 %,达到5 991.0 kg/hm2;光糖度提高了17.9%,达到了19.13 g/L;叶片光合速率、叶绿素含量、N、P、K含量等均有提高.袋控肥在吐鲁番无核白葡萄生产上有较好的缓释效果,保肥能力强,可以作为当地无核白葡萄生产的有效缓控释肥措施.     

Development on the Calculation Software Package of the Contribution Rate of Mechanization in Agriculture

This paper introduces a software specially in calculating the contribution rate of machaniztion in agriculture by usng economy math method,computer technology and Visual Basic 6.0 version.The software package has friendly interface,simple operating way and accurate,feasible calculating method.It greatly changes the condition in the past which had considerable lots of data and miscellaneous and trivial methods,which were even hard to seek answer,So it has very high practicl value.     

甜菜参数综合处理软件包的设计与实现

本软件包（ＳＰＴＩ）能完成甜菜育种试验过程各项参数的自动检测和存储，并根据不同的田间试验方法及数据处理要求，对各参数项进行快速、准确的处理。处理结果以图或表形式给出。该软件包为一实用的软件工具，应用于甜菜育种试验，对各参数的检测、统计分析可节省大量的人力、物力。