浅谈阜新蒙古族自治县玉米膜下滴灌农艺措施

以玉米膜下滴灌栽培技术研究成果为依据，总结了辽宁省阜新蒙古族自治县东部地区推广应用该成果的具体措施，并提出相应对策。     

多效抗旱驱鼠剂对种苗生长影响研究

用多效抗旱驱鼠剂 ( RPA)对小麦、黄豆、油松、侧柏种子进行浸种、拌种处理 ,结果表明 ,侧柏以林用型 30 0倍浸种和 30倍拌种效果最好 ,油松以林用型 50 0倍浸种和 50倍拌种促长效果更为明显 ,经检验分析 ,差异显著。黄豆、小麦以农用型 4 0 0拌浸种和 4 0倍拌种 ,对其发芽生长有显著的促进作用。以林用型 1 50倍对油松、侧柏进行蘸浆造林 ,能促进苗木生长 ,提高抗旱能力     

铁锅外表面局部热浸渗铝工艺研究

本文根据热浸渗铝法,可有效提高金属表面抗氧化能力,我们对“低碳钢板热冲压成型铁锅外表面进行局部热浸渗铝”的工艺,进行了探讨和研究,经产品试制和质量检验,取得了较好的结果。     

丘陵沟壑区苹果树滴灌试验及节灌制度研究

[目的]研究丘陵沟壑区苹果园的节灌制度。[方法]采用测坑试验和大田试验,对苹果树进行覆膜、覆草和清耕处理,确定西北黄土高原区苹果树的耗水规律、灌水定额、灌水次数、最佳灌水关键期及灌水部位、毛管布设方式。[结果]覆草处理的耗水量和耗水强度最小,苹果产量最高,水分生产率最高。3种处理的年耗水量433.5~478.5 mm,在降水保证率50%的平水年,盛果期清耕处理滴灌4次为宜,最佳灌水期为萌芽前、新梢旺长前、果实迅速膨大期和封冻前,全年灌溉定额1 030 m3/hm2,覆草和覆膜处理的灌溉定额比清耕处理少5%~10%。每个滴头滴水量30 L为次最佳灌水量。毛管布设以果树主干为中心,成"S"形。[结论]该研究建立了丘陵沟壑区苹果园滴灌条件下的节灌制度。     

QFT—51型全自动液压汽车倾翻试验台软件设计

该系统由测量轴重，轮重，侧倾稳定角，质心位置和驻坡度等功能软件组成。通过实践证明，试验台的软件成功地完成了系统预定的各种功能，并能保障系统安全运行。     

低毒杀虫剂对悬铃木方翅网蝽的室内毒力测定

采用浸虫法测定了9种低毒杀虫剂对悬铃木方翅网蝽高龄若虫的毒力,结果表明:吡虫啉、印楝素和绿僵菌对高龄若虫没有触杀活性,其余6种药剂的毒力大小依次是甲维盐>阿维菌素>联苯菊酯>鱼藤酮>三唑磷>敌百虫,建议使用甲维盐、阿维菌素、联苯菊酯和鱼藤酮进行悬铃木方翅网蝽的应急防治。     

Postharvest characteristics of cut dahlia flowers with a focus on ethylene and effectiveness of 6-benzylaminopurine treatments in extending vase life

With the aim of extending vase life of cut dahlia flowers, we investigated the postharvest characteristics of the flowers. Our focus was on the role of ethylene on senescence and on treatments that have extended vase life of other flowers. Continuous exposure to ethylene at 2 or 10 μL L⁻¹ significantly accelerated petal abscission in cut flowers. Flowers continuously immersed in 1 or 10 μL L⁻¹ 2-chloroethylphosphonic acid (CEPA) solution wilted earlier than those treated with distilled water (DW) or 0.15 g L⁻¹ citric acid. Ethylene production from the ovary and ray petal was relatively high (4.5 and 0.9 nL g⁻¹ fresh weight h⁻¹, respectively) at harvest, but decreased gradually over 5 days. No remarkable increase in ethylene production was observed during senescence. Silver thiosulfate complex (STS), an inhibitor of ethylene action, did not extend the vase life of cut flowers, although a high silver concentration was detected in flower organs. In contrast, pulse treatment with 1-methylcyclopropene (1-MCP) and dip treatment with 6-benzylaminopurine (BA) extended the vase life of florets, and BA was more effective than 1-MCP when the flowers were held in both DW and CEPA. BA spray treatment extended vase life of cut ‘Kokucho,’ ‘Kamakura’ and ‘Michan’ flowers. These results suggest that dahlia flower senescence is partially regulated by ethylene, and BA is more effective in delaying the senescence of cut dahlia flowers than ethylene action inhibitors.