新垦沙地地膜花生栽培技术研究

在新垦沙地采用了地膜花生栽培技术，并辅以“集中施肥技术”，收获了３８８．４ｋｇ／亩荚果，比一般栽培增产１２０．８％。表明地膜花生具有明显的增温、保墒，充分接受光能及抑制田间杂草等良好作用。     

小麦-花生套种模式的气候适应性试验研究

基于枣庄市粮油作物种植用地矛盾日益加剧的事实,枣庄市农业技术推广中心于2003年5月25日至6月10日在滕州农作区进行了小麦套种花生的小气候试验,接着于2004年麦收前进行了花生套种播期试验。试验结果表明,该市小麦套花生的套种行距应大于24cm,套种时间在麦收前20天左右为宜。     

叶县及时复垦关闭砖瓦窑惠泽村民

有的正在捡拾地里的碎砖块,有的点种着玉米、花生,有的在栽植红薯苗,有的在整理着土地……40多位村民说着,笑着,忙碌着.这是笔者6月4日在叶县遵化店镇霍张村砖瓦窑厂旧址看到的喜人场景.     

汤阴县净化旅游景区用地环境

10月2日，带儿子到滩区拾花生，想让他体验一下这种拾荒经历。谁知，还不到一个小时，儿子的新鲜劲儿就没了，挖了一条蚯蚓后便躲到树下玩去了。我自己也没了兴致，到地里看农户刨花生。     

开封市花生产量与气象因素的关联度分析

运用灰色关联度分析理论,对开封市2001-2010年花生产量和气象因素的关联度进行分析.研究结果显示开封市花生产量与各气象因素之间的关联度按照由大到小依次排列为:8月份平均气温＞7月份平均气温＞6月份平均气温＞6月份光照＞5月份平均气温＞8月份光照＞6月份降水＞5月份降水＞7月份降水＞5月份光照＞8月份降水＞7月份光照.开封花生产量与气温条件的关联度最大,特别是在花生播种期间,平均气温仍然不稳定,容易受冷空气的影响,不利于花生的出苗和生长,因此选择适宜的播种期,对提高产量十分重要.花生进入荚果发育期,要特别注意防范暴雨洪涝和连阴雨天气对花生产量造成的不利影响.花生播种需要适宜的土壤水分含量,如果降水量不足,要及时造墒,降水量过多、墒情过湿要晾墒.花生开花期如果降水量不足,土壤干旱会使开花数量减少甚至开花中断.荚果成熟期如果降水量不足,会严重影响花生荚果的充实和含油量的提高.因此在花生开花期和荚果发育后期如果降水量偏少,应及时采取人工灌溉,增加土壤含水量,以提高花生产量.     

FATTY ACIDS PROFILE IN A HIGH CELL DENSITY CULTURE OF ARACHIDONIC ACID-RICH PARIETOCHLORIS INCISA （TREBOUXIOPHYCEAE, CHLOROPHYTA） EXPOSED TO HIGH PFD

The changes in arachidonic acid (AA) and fatty acids profiles along the growth curve ofParietochloris incisa, a coccoid snow green alga, were studied in a 2.8 cm light-path flat photobiorcactor, exposed to strong photon flux density [PFD, 2400 μEmol/(m²·s)]. Sixteen fatty acids were identified by gas chromatography showing that AA was the dominant fatty acid (33%–41%) followed by linoleic acid (17%–21%). AA content was closely investigated with respect to total fatty acids (TFA), ash free dry weight (AFDW) of cell mass as well as total culture content. These parameters were influenced significantly in a similar manner by culture growth phase, i.e., slightly decreasing in the lag period, gradually increasing in the logarithmic phase, becoming maximal at the early stationary phase, starting to decrease at the late stationary phase, sharply dropping at the decline phase. The increase in AA per culture volume during the logarithmic phase was not only associated with the increase in AFDW but also connected with a corresponding increase in AA/TFA, TFA/AFDW as well as AA/AFDW. The sharp decrease in AA content of the culture during the decline phase was mainly due to the decrease in AA/TFA, TFA/AFDW and AA/AFDW, although AFDW declined only a small extent. Maximal AA concentration, obtained at the early stationary phase, was 900 mg/L culture volume, and the average daily net increase of AA during 9 days logarithmic growth was 1.7 g/(m²·day). Therefore, harvesting prior to the decline phase in a batch culture, or at steady state in continuous culture mode seems best for high AA production. The latter possibility was also further confirmed by continuous culture with 5 gradients of harvesting rate. Contribution No. 4138 from the Institute of Oceanology, Chinese Academy of Sciences. Project 39970575 supported by NSFC and A/2786-2 supported by International Foundation for Sciences (IFS).     

n-3多不饱和脂肪酸DHA、EPA研究进展

以DHA和EPA为代表的多不饱和脂肪酸(PUFAs)是指碳原子数多于或等于18且含有两个或两个以上双键的一类脂肪酸。通常按照第一个双键的位置把多不饱和脂肪酸分为3类:n-3PUFAs,即从甲基端数第1个双键的位置在第3碳位的多不饱和     

吉水县花生种植中的气候问题及其对策

针对气候条件对花生生产的影响,浅析出花生种植中的气象灾害问题,并提出了防御对策。     

硅肥对花生增产作用试验研究：以黄河冲积平原土壤为例

利用郑州铝厂赤泥为主要原料，添加一定量硅肥添加剂生产的硅肥，在黄河冲积平原土壤上进行花生小区对比试验研究。结果表明：硅肥施用后，花生增产率在１０％以上。为今后利用赤泥作硅肥主要原料提供了成熟工艺，同时为在黄河冲积平原花生产区推广硅肥积累了经验。