京西稻的百年传承与发展     

杜振东 《中国稻米》2021,27(4):137-140

京西稻是清康熙、雍正、乾隆等亲自选育的优良品种,在与紫禁城并重的“三山五园”政治中心内外种植,具有多重价值属性,属于皇家御稻。从2000年起,基于北京水资源匮乏等原因,京西稻种植面积大幅度降至134 hm²左右,处于濒危状态。在保护传承过程中,京西稻入选中国重要农业文化遗产目录。在新修订的《北京历史文化名城保护条例》中,又将京西稻列入遗产保护目录。在海淀区,京西稻已经深入公园、学校、社区、酒店等地,在教育文化中发挥着农业以外的作用。  相似文献   

Preparation and characterization of gluten-free sheeted doughs and noodles with zein and rice flour containing different amylose contents     

《Journal of Cereal Science》2017

This study aimed to explore the feasibility of zein as a gluten alternative in preparing sheeted doughs with rice flours containing different amylose contents (12, 19, and 26%) that were successfully slit into noodle strands. Rice-zein mixtures with lower amylose contents exhibited lower pasting parameters and the high amylose paste samples possessed more elastic properties. Higher water absorption was observed in the low amylose rice-zein mixture whereas the use of zein were effective in increasing the stability of rice dough regardless of amylose content. In case of thermal conductivity, the noodle doughs prepared with high amylose rice-zein mixture had low thermal conductivity, probably implying a long cooking time. The structure of the rice-zein noodles had a tendency to become firmer with increasing levels of amylose by showing greater breaking stress and resistance to extension that could be correlated to reduced cooking loss.  相似文献   

湟源县草地资源基本特点及开发利用     

殷咸芳  刘志林 《青海草业》2001,10(4):21-22,15

湟源县草地面积有 85 1 85 .1 3hm2 ,占全县土地总面积的 5 6.45 % ,草地资源丰富 ,牧草种类较多 ,农业生产秸秆来源广泛 ,但由于利用不当 ,造成了草地严重破坏和秸秆的浪费 ,如何合理利用草地和秸秆资源 ,扼制草地退化 ,是促进该县畜牧业发展的重要因素  相似文献   

采种大白菜地膜复盖的研究     

李风岐 《山西农业大学学报(自然科学版)》1986,(2)

为了提高大白菜(B. campestris ssp pekinensis.)种子的产量和质量,我们进行了两年地膜覆盖研究。结果表明:无论直播小株、育苗小株、老株那种采种方式,凡使用地膜覆盖的均比不覆盖的产量增加30％左右,质量也明显的提高;聚乙烯、聚氯乙烯都是良好的地而覆盖材料,在大白菜种子生产中可以取得相近似的效果。  相似文献   

水稻条纹病毒在玉米和水稻上流行差异分析     

程兆榜  陈思宏  朱荣鹏  刘海建  魏邦庆  熊如意  周彤  季英华  周益军  范永坚 《勤云标准版测试》2006,(12)

为了明确水稻条纹病毒(RSV)在水稻和玉米上发生程度差异明显的原因,从一个侧面了解RSV流行本质,2004年在洪泽进行田间试验。采用黄盘诱集、盘扑、盘刮、肉眼计数等方法比较武育粳3号和掖单13上灰飞虱侵入和消长动态,结果表明两者均只有一个成虫侵入高峰,单位面积迁入虫量前者是后者的3.6倍,单株平均虫量相近。Dot-ELISA法测定灰飞虱带毒率为40%,成虫迁移扩散高峰期22d内两者接毒量约为每天百株137头带毒虫。武育粳3号有二代若虫发生,掖单13则无。逐日调查发病进程,结果显示水稻发病率为60%,玉米为0。室内抗性鉴定,掖单13对RSV的抗性比武育粳3号高4个级别。综合以上结果,寄主品种抗性决定了RSV在水稻和玉米上流行状况,二代若虫重复侵染是RSV在水稻上重发的另一主要原因。  相似文献   

多效疏导素对水稻秧苗素质及产量影响的研究     

周岚  刘玉兰  陈凯峰  李开忠  于佩锋 《吉林农业科学》2004,29(2):15-17

研究了多效疏导素水溶液对水稻秧苗素质和产量的影响。结果表明,采用适宜的浓度穴10‰雪多效疏导素水溶液对水稻秧苗素质有显著提高,可提高水稻产量达8.0%;过高的浓度,则会明显抑制水稻秧苗生长,造成减产。  相似文献   

地膜覆盖对棉枯萎病发生的影响   总被引：1，自引：0，他引：1  

贺忠秀  刘光珍 《西南大学学报(自然科学版)》1994,16(5):419-421

地膜覆盖显著降低了棉花枯萎病的发病率与病情指数，极显著地提高了棉花的产量。  相似文献   

内2优6号生育特性及高产栽培技术模式研究     

周祖昌奚天位  张玉屏曹雪仙鲁贤平  朱德峰 《勤云标准版测试》2005,(9)

内2优6号全生育期146d,适于单季稻种植,分蘖力中等,株型较大,每穗约200粒,粒重高,千粒重30.5g,抗倒性较强。但叶片较长较宽。高产栽培的关键,培育壮苗,扩行稀植,控制中后期氮肥用量,增施钾肥,浅湿干灌溉,促进根系生长,提高根系活力和结实率。  相似文献   

6-BA诱导的过氧化氢酶及其在提高水稻抗寒力中的作用研究     

吕俊  朱利泉  沈福成  张毅  王三根 《勤云标准版测试》2005,(12)

6-BA可以显著提高水稻抗寒性。为了进一步明确6-BA诱导水稻抗寒机制,对6-BA及低温 诱导水稻的过氧化氢酶进行了研究。研究表明,过氧化氢酶可受6-BA诱导,并且在提高水稻抗寒力 中可能起重要作用。  相似文献   

Evaluation of Wheat (Triticum aestivum) and Legume Intercropping Under 1:1 and 2:1 Row-replacement Series System     

P. Banik 《Journal of Agronomy and Crop Science》1996,176(5):289-294

A field experiment was conducted during the winter season of 1992–93 and 1993–94 at Agricultural Experimental Farm, Giridih, Bihar to evaluate the intercropping systems of legumes, gram ( Cicer arietinum L.), pea ( Pisum sativum ) and lentil ( Lens culinaris ) with wheat ( Triticum aestivum ) in 1:1 and 2:1 'row replacement series'. Intercropping systems were assessed on the basis of new indices termed as actual yield loss (AYL) and intercropping advantage (IA). This paper highlights the comparative effectiveness of evaluating the intercropping systems through the existing intercropping indices like LER, RCC, aggressivity. The indices AYL and IA seem to be more appropriate particularly when per plant yield is considered. Intercropping reduced the yield of component crops compared with respective pure stands. Wheat + pea in 1:1 row replacement series gave the highest wheat yield equivalent value (3.02 t ha⁻¹) followed by wheat + lentil (2.91 tha⁻¹). When the actual sown proportion was considered wheat + lentil (1:1) resulted in maximum AYL (+0.610) and IA (+0.279) values. This treatment also gave the maximum monetary advantage (Rs 5985.45 ha⁻¹).  相似文献