An integrated rice panicle phenotyping method based on X-ray and RGB scanning and deep learning

Rice panicle phenotyping is required in rice breeding for high yield and grain quality.To fully evaluate spikelet and kernel traits without threshing and hulling,using X-ray and RGB scanning,we developed an integrated rice panicle phenotyping system and a corresponding image analysis pipeline.We compared five methods of counting spikelets and found that Faster R-CNN achieved high accuracy(R~2 of 0.99)and speed.Faster R-CNN was also applied to indica and japonica classification and achieved 91%accuracy.The proposed integrated panicle phenotyping method offers benefit for rice functional genetics and breeding.     

太子参须提取物对鸭流感病毒体外试验初探

为尝试性探究太子参须提取物对鸭H9N2亚型流感病毒体外生长的抑制作用,本文基于TCID50试验检测鸭H9N2亚型流感病毒体外感染不同处理组的MDCK细胞.结果 表明,太子参须提取物高低剂量组(75％、25％)和黄芪多糖阳性对照组均对鸭H9N2亚型流感病毒体外生长产生抑制,且太子参须提取物高剂量组(75％)的抑制作用最优...     

地市级农科所以科技创新推动地方产业发展的实践与思考 ——以江苏里下河地区农业科学研究所为例

文章以江苏里下河地区农业科学研究所为例,总结了其以科技创新推动地方产业发展的实践经验,分析了地市级农科所以科技创新推动地方产业发展存在的问题,如农业科技创新投入强度偏低、科研成果与市场脱节、农业科研与科技推广不能有效衔接等,并从加大对基层科研单位的科研投入力度、发挥市场和政府等多元化主体作用、优化农技推广服务体系、转变传统科技创新思路等方面提出了有针对性的建议,以期推动科技创新与产业发展深度融合。     

Gel Properties of Surimi from Silver Carp (Hypophthalmichthys molitrix): Effects of Whey Protein Concentrate,CaCl2, and Setting Condition

The effects of setting time, whey protein concentrate (WPC), and calcium chloride (CaCl₂) on textural properties of silver carp surimi were investigated. Response surface methodology was used to evaluate and compare the effects of setting time (30–90 min), WPC (1–9% of protein ratio), and CaCl₂ (1–59 mmol/kg) on the gel strength. Models for breaking force, breaking distance, and gel strength of surimi gel were established. The maximum gel strength was achieved at the setting time of 60 min, WPC and CaCl₂ at 5% protein ratio, and 15–18 mmol/kg. CaCl₂ was the most significant factor affecting the gel strength.     

渔用聚乙烯单丝节能纺生产研究

通过对渔用聚乙烯单丝的节能低压纺丝技术研究,研发一种高分子材料低压纺丝口模和静态混合器;经在不同长径比螺杆的通用纺丝机上实验和考核结果显示：每吨单丝平均节电180KW／h;电力能耗人工等生产成本平均下降25％;纺丝生产产量和效率平均提高30％;单丝产品微观特征和性能良好、机械物理性能和后续绳线产品质量符合或超过国家、行业标准优等品指标;本项节能纺丝生产技术研究与应用,可降低渔业绳网和单丝行业的能源消耗等加工成本,提高产品质量和生产效率,符合我国节能国策。     

蟹塘生态调控技术对“淤泥-水界面”N,P交换通量的影响

调节pH值、加钙和增氧是常用的蟹塘生态调控技术,为明确其对水质和N,P养分交换的影响,通过实验室模拟并测定了水体N,P含量及"淤泥-水界面"交换通量。结果表明:3种措施对水体N,P均有显著影响,且增氧对水体N,P的调节效应显著强于加钙和调节pH。增氧96 h后水体TN和NO_3^--N含量分别是不增氧处理的1.68和7.43倍,同时增氧削减了水体NH4+-N含量至试验结束,增氧处理NH_4^+-N含量平均降低70%～75%。"淤泥-水界面"N,P交换通量表明,增氧后TN交换通量平均提高2.47～3.74 mg·m^2/h,而对TP交换通量均无显著影响,平均仅为-0.1 mg·m^2/h。     

羊栖菜(Sargassum fusiforme(Harv.) Setchel)的研究现状及前景

本文综述了近年来关于羊栖菜的化学成分、生物活性及加工方而的研究情况。     

果树盆景的修剪

果树盆景的修剪,主要在冬、春两季,分为冬季修剪和春季修剪两大类. 1、冬季修剪 冬季修剪,即果树落叶后到春花芽萌动前,这一休眠时期的修建,又叫休眠期修剪,这时大部分果树营养已由枝梢和叶片转送到主枝干和根部贮存起来.