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The effect of silicon on aluminum detoxification in leguminous crops were investigated in this study by analyzing the effect of Si on root elongation and membrane lipid stability in root apices under Al stress in five cultivars of Stylosanthes.

为了解硅在解除豆科作物铝毒方面的作用，本文以5个品种的柱花草为材料研究了硅对铝胁迫条件下的植物根伸长及膜脂稳定性的影响。

Calla lilies (Zantedeschia spp.), belonging to the family Araceae, are perennial bulbous flowers. Because calla lilies are very popular among consumers and the cultivation areas continuously increase, they become important flower crops worldwide.

海芋为天南星科、马蹄莲属多年生球根花卉，近年来深受消费者喜爱，栽培面积持续增加，已成为国际间重要的花卉作物。

Based on analyzing and comparing the characteristics of the present cutters, the material characteristics of Arundo Donaxl has tested and analyzed in this paper, and investigated a rotating chain-type saw-tooth cutter for stalks of tall-thick and harder crops , and developed a cutting test system including the rotating chain-type cutting tester system and transportation mechanism and the high-speed photography image collecting and processing system. Arundo Donaxl cutting test has been carried out and the cutting process of the Arundo Donaxl has been photographed on-line by the high-speed photography image collecting system.

本课题在比较分析现有切割器性能特征的基础上，试验分析了芦竹的物料特性；研究了用于高、粗、硬茎秆作物切割的回转链式锯齿形切割器；设计了包括回转链式芦竹切割器、芦竹夹持输送装置和高速摄像图像采集与处理系统的芦竹收割机切割试验系统；对芦竹进行了切割试验，并通过高速摄像图像采集系统在线记录了切割过程；运用自行设计开发的高速摄像分析及其序列图像处理软件，试验分析了影响芦竹切割质量和切割效率的因素。

The Ipomoea batatas is for the convolvulaeae sweet potato the annual starch crops, sweet potato in Hunan varied assortment, this article mainly take 25 varieties in Hunan,including Xiang 87-541, Xiang 17, Huang Xin-potato 031, egg yolks and so on, and 6 foreign country varieties,including Simon-1,victory-100, Nancy holl and so on ,as the material.

摘 要：红薯为旋花科甘薯属一年生淀粉作物，湖南红薯品种繁多，本文主要以湘87-541、湘17、黄心薯031、鸡蛋黄等25个品种及Simon-1、胜利百号、南瑞苕等6个外域品种为材料。

The results showed that the aphids were either restrained or promoted when they fed on different treatment crops, compared with the control not fed by aphids and the corresponding treatment previously fed by different aphid species. S. avenae restrained the growth of S. graminum (MRGR=0.0974±0.0071) on 98-10-30, but S. graminum promoted the growth of S. avenae (MRGR=0.1614±0.0048) on 98-10-30. Penetrations of aphids promoted the growth of S. avenae on Amigo, while promoted growth of S. graminum on Batis.

结果表明：品种不同，蚜虫在不同处理条件下取食作物时受到的影响也不同，即在品种98-10-30上，通过与前期不接虫的对照及前期接不同麦蚜的相关处理比较，麦长管蚜对后期取食的麦二叉蚜(MRGR=0.0974±0.0071)具有抑制作用，而麦二叉蚜对后期取食的麦长管蚜(MRGR=0.1614±0.0048)却有促进作用；在品种Amigo上，前期麦蚜的危害对麦长管蚜的取食具有促进作用，而在品种Batis上前期危害对麦二叉蚜的取食具有促进作用。

The effects of 4 amendments on biomass, Cd uptake of Brassia chinensis , and pH and DTPA-extracted Cd in Cd-contaminated soils were investigated in a pot experiment of two continuous crops of B.

采用盆栽试验，研究了施用石灰、钙镁磷肥、泥炭、碱渣4种土壤改良剂对外加镉污染的赤红壤上小白菜产量、镉吸收量、土壤有效态镉及pH的影响。

The results show that transpiration rate of branch and leaves of Pisum Sativum is the highest in 4 crops, while Bromus Innermis is the lowest one.

结果表明，豌豆的枝蒸腾速率和叶片蒸腾速率均最高，其次为紫花苜蓿和燕麦，无芒雀麦最低。

While the look is no less bumpkinish today than it ever was, corn is showing up in the production of more everyday items -- and without resembling a prop from "Hee Haw." What looks like normal oil-based plastic at first glance is actually polylactic acid plastic made from specially processed crops.That's right: corn plastic .

现在玉米越来越多地应用于日常用品的生产，乍一看和正常的石油基塑料一样，实际上是由农作物特殊加工制造而成的聚乳酸塑料，这就是玉米塑料。

Several researchers in Canada capably responded to the challenge issued in the 1980s to conduct Maximum Yield Research on important crops of their regions.

八十年代，加拿大出现了高产研究，一些研究者在其所在地区的主要农作物上成功地进行了一些工作。

The requirement of moisture for carpogenic germination and growth of the pathogen are reasons why rainy periods or irrigation are associated with outbreaks of disease on certain crops. Disease development is favored by moderate temperatures of 15 - 25 C.

子实体萌发和病菌生长对湿度的需要可以解释为什么在多雨期或灌溉时易爆发菌核病，15～25℃的温度对菌核病的发展十分有利。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。