榆林塑料大棚马铃薯复种番茄栽培技术

在榆林采用塑料大棚早春种植马铃薯,马铃薯收获后再栽培一茬番茄,每667 m2产值达到10400元,其中前茬马铃薯产量2500 kg,产值5000元,后茬番茄产量4500 kg,产值5 400元,取得了较好的经济效益。同时马铃薯实现早春提前供应,番茄达到秋延后上市,缩短了市场供应淡季,缓解了供求矛盾,取得了良好的社会效益。     

四棱豆的引种及其适应性研究

研究了3个四棱豆品种在湖南怀化地区境内不同区域的生育期特性、主要农艺学性状及其适应性。结果表明:四棱豆在怀化地区最适于每年的4月底至5月中下旬播种;并且这3个四棱豆品种均表现出较强的适应性,其中适应性最强的品种是桂丰一号,其产量高,抗病力强,具有极大的推广价值。     

Comprehensive Results of Closing Hill for Forest as Regeneration Project (CHFRP)

In order to approach the comprehensive results of CHFRP, Mayandong stock cooperation forest farm was selected as research object in Xupu county. These methods such as semi-structure interview, second data analysis and sample sites survey were used to investigate and study the ecological results, economical results and social results of CHFRP. The results show that CHFRP can restore the forest vegetation, promote forest growth, improve the physical and chemical properties and nutrition condition of forest soil, enhance economical result, and stabilize the production form in countryside. Therefore, the ecological results, economical results and social results of CHFRP are good. This research has found a way for reclaiming degraded forestland in Xupu county and other areas.     

对小水电网继电保护几点问题的讨论

地方小水电网由于网络结构复杂,运行方式变化频繁,对继电保护的正确动作带来了很大的影响。根据地区电网多年运行的情况,对保护的整定计算方法等提出了一些改进措施和建议。     

高直链淀粉玉米amylose-extender基因功能标记的开发及应用

直链淀粉的含量是玉米淀粉品质的重要指标,受隐性核基因amylose-extender(ae)控制.生产中直链淀粉含量的测定费时、费力,因此高直链淀粉玉米的改良需要寻找快速、简便、准确的基因检测方法.本实验对高直链淀粉玉米材料和普通玉米材料ae基因的cDNA进行了测序,结果显示高直链淀粉材料cDNA 序列第9外显子(84...     

The Organization and Management System of Closing Hillside for Forest as a Regeneration Project (CHFRP)

By investigation, the thesis analyses and summarizes the forming and developing of CHFRP In Xupu county. We select the Mayandong stock cooperation forest farm as object, adopt the methods such as semi-structure interview, analysing second data and surveying sample plots, analyse and study the process to clarify the property right, the profits allocated forms and the management forms. The results show that CHFRP can tentatively resolve the contradiction between the forestland using right scattered to every household and proper scale management demanded by forestry production. CHFRP can enhance economic result and stabilize the production form in countryside. The ecological result, economic result and social result of CHFRP are sufficient.     

四棱豆的引种及其适应性研究

研究了3个四棱豆品种在湖南怀化地区境内不同区域的生育期特性、主要农艺学性状及其适应性。结果表明：四棱豆在怀化地区最适于每年的4月底至5月中下旬播种;并且这3个四棱豆品种均表现出较强的适应性,其中适应性最强的品种是桂丰一号,其产量高,抗病力强,具有极大的推广价值。