杂交稻三香优410的特征特性及栽培技术

三香优410在建瓯种植,表现出丰产性好、抗性较强、米质优良等特性,栽培上要注意选好秧田、培育壮秧、合理密植、科学施肥、做好水管、病虫防治。     

等壳水电站碾压混凝土重力坝非溢流坝段稳定渗流场有限元分析研究

通过建立等壳水电站的非溢流坝段的准三维有限元模型,模拟了坝体排水管和排水廊道、上下游防渗层、坝基灌浆帷幕、坝基排水管和排水廊道等,对正常蓄水位工况下坝体、坝基的渗流总水头、压力水头、渗透比降、坝基扬压力分布及渗流量进行了计算分析,验证了坝体和坝基的防渗排水措施的合理性。     

北京龙耘种业有限公司

中单28是中国农科院作物所选育的高产、多抗、优质、中晚熟普通玉米单交种，其组合为中1128x中5493。2005年4月经北京市农作物品种审定，审定编号为：京审玉2005001。2007年3月经山西省农作物品种审定，审定编号为：晋引玉2007008。     

6种钝化剂对糙米镉含量及镉在水稻中的转移和富集的影响

旨在为合理使用钝化剂及水稻糙米镉(Cd)含量与Cd在水稻体内富集和转移的关系提供一定的理论依据。从6种钝化剂中筛选出能够抑制糙米Cd积累的材料,通过对不同超标程度水稻组的产量、糙米Cd含量、各个器官对Cd的富集系数和转移系数进行统计分析,探讨不同钝化剂对Cd在水稻体内转移和富集的影响。结果表明:与对照相比,低、中浓度C材料和FA材料能够降低糙米中Cd浓度;FB材料和中、高浓度FD材料会促使糙米中Cd的积累。水稻各器官对Cd富集能力,无超标水稻为根茎米叶糠,超标水稻为根茎米糠叶;Cd向糙米的转移途径中,在不超标水稻组中糠—米的转移能力最强,在超标水稻组中叶—米的转移能力最强。     

干旱胁迫下山栏稻与栽培水稻品种苗期表型性状及生理差异

测定了在干旱胁迫条件下,山栏稻苗期的株高、叶面积等农艺性状以及叶片脯氨酸含量、MDA含量等生理指标,采用隶属函数法评估山栏稻抗旱能力。结果表明,在干旱胁迫下,山栏稻降低了地上部分的生物量并增加了地下部分的生物量,同时,山栏稻叶绿素含量、MDA含量以及脯氨酸含量均有不同程度的提高;所选山栏稻品种的隶属函数值为0.521和0.673。综合实验数据和田间观察,初步判断山栏稻苗期具有较强的抗旱特性。     

浅谈大田县政策性水稻种植保险现状及对策

大田县开展政策性水稻保险工作取得显著的成效。该文总结了大田县推进政策性水稻种植保险的意义、现状、存在问题,并提出今后完善政策性水稻种植保险的对策。     

低碳节约型园林的探索

随着社会经济和城市建设的迅速发展，自然资源和生态环境等面临着巨大压力，矛盾日益突出，本文主要结合目前非常流行的低碳经济讨论了建设节约型的园林。     

Changes in the properties of rice varieties with different amylose content on dry heat parboiling

Dry heat parboiling is a unique paddy processing technique that has been scarcely exploited. Dry heat parboiling at high temperature for short time and low temperature for long time on physical and physicochemical properties of three rice varieties differing in amylose content were studied. Hardness of the kernels increased from 66.4 N, 68.8 N and 59.8 N in raw samples to 89.1 N, 86.9 N and 59.8 N in parboiled high amylose, low amylose and waxy rice samples respectively. Rapid migration and evaporation of water from severely heated kernels caused cavity formation at the centre. Irreversible damage of amylopectin structures to leachable fractions caused continuous rise of the pasting curve. Crystallinity was thereby reduced. Parboiled high amylose samples gave X-ray diffraction patterns with peaks characteristic of A, B and V-type starch crystallinity. Crystalline starch-lipid complexes were observed in low amylose and waxy rices. The significant increase in the amount of rapidly digestible starch from 56.7%, 61.7% and 66.6% in raw samples to 92.1%, 90.8% and 94.8% respectively in severely processed rice samples and subsequent reduction in resistant starch from 24.5%, 21.2% and 18.4% to 0.4%, 1.9% and 0.1% indicated possibilities for targeted food use of the dry heat parboiled samples.     

调环酸钙25%悬浮剂对直播稻抗倒伏和产量性状的影响

为了研究新型植物生长调节剂调环酸钙在直播稻上的应用效果,本研究设计了调环酸钙25%悬浮剂在直播稻武运粳8号上的田间试验,用来了解其对直播稻的抗倒伏性状和产量性状的影响。试验结果表明:在直播稻武运粳8号的分蘖期使用调环酸钙25%悬浮剂12~15g/667m2均能够显著降低水稻的株高,缩短茎基部节间长度,提高水稻的抗倒伏能力,同时也能显著提高水稻产量。