不同覆土深度对鸡腿菇子实体产量的影响   总被引：7，自引：1，他引：7  

杨宣华  张维民  关仕港  麦焯棉  聂呈荣 《中国食用菌》2004,23(2):27-28

本试验研究 11种覆土深度对鸡腿菇子实体产量影响。结果表明 ,不同覆土深度对子实体产量、有效子实体数和幼蕾数均存在显著的影响。覆土越厚 ,幼蕾数越少。当覆土深度在 0 5～ 3cm时 ,子实体产量和有效子实体数随着覆土层的加厚逐渐增加 ,在覆土深度为 3cm时达到最大值 ,覆土深度大于 3cm时 ,则随着覆土层的加厚而逐渐减少。从生产的角度看 ,覆土 3cm是比较适宜的覆土深度 ,此时的子实体产量最高。  相似文献   

插条粗度和萌芽度对降香黄檀扦插成活率的影响     

施悦谋  税珺  刘一贞  黄剑华  麦有民 《湖南林业科技》2014,(1):20-24

在江门市林科所苗圃选择不同粗细度、不同萌芽度的降香黄檀插条进行扦插繁殖试验,每10 d进行1次成活率调查。结果表明:插条的萌芽度和粗细度均极显著影响扦插的成活率,萌芽度和粗细度的交互作用对扦插的成活率也有极显著影响;未萌芽插条扦插成活率明极显高于已萌芽插条的扦插成活率;3种粗细度的枝条中以粗细度为0.7~1.2 cm的插条扦插成活率最高;在枝条萌芽度及粗细度交互作用下,粗细度为0.7~1.2 cm的未萌芽插条扦插成活率最高,粗细度小于0.7 cm的已萌芽插条扦插成活率最低。  相似文献   

百合在固原冷凉地区引种的适应性     

杨彩玲  马贵  买自珍  马文娜  马永军 《北方园艺》2021,(19):69-77

以10个百合种质为试材,采用田间小区试验,通过系统观测、分析百合物候期及其茎、叶、花、鳞茎等器官生长特征,结合百合产量和经济效益分析,研究了10个百合种质在固原冷凉地区的适应性,以期为以上百合种质在固原冷凉地区的进一步开发利用提供参考依据.结果 表明:10个百合种质均能在该地区出苗、开花、生长;其中,YNSB2、YNSB4及YNSB5花径较长,YNXY、HNJD及YNSB3花朵较多,这些种质花色多样,株高适中,可用于观赏;HNJD和YNSB3鳞茎片厚实,鲜质量较大,产量较高,具有较高的经济价值.  相似文献   

杉木组培苗生根质量优化研究     

蒋凡  买凯乐 《湖北农业科学》2020,59(11):81-83,88

从两个方面优化杉木[Cunninghamia lanceolata(Lamb.)Hook.]组培苗生根质量,一是在增殖阶段对其进行高浓度和低浓度激素培养基交替处理以优化组培芽苗的质量,从而达到优化杉木组培苗生根质量;二是在生根阶段改变光源,以优化杉木组培苗生根质量。结果表明,高浓度激素和低浓度激素交替处理后的杉木增殖芽苗,具有增殖率高、生长快、节间距适中、木质化程度较高等表观性状,且这些性状随着继代次数的增加表现比较稳定,增殖芽接种到生根培养基后,生根率最高达到86.5%,生根数量最高达到2.7条。LED复合光源红蓝光配比为2∶1时生根率最高,达到86.7%;在红蓝光配比为4∶1时生根数量最高,达到2.8条。  相似文献   

THE HILAR PERIVENOUS HYPERECHOIC TRIANGLE AS A SIGN OF ACUTE SPLENIC TORSION IN DOGS     

WILFRIED MAI 《Veterinary radiology & ultrasound》2006,47(5):487-491

Diagnosis of acute primary splenic torsion is challenging. The ultrasonographic appearance of this condition has been described, but other splenic diseases, such as diffuse infarction because of thrombosis, can appear very similar. We describe an additional ultrasonographic sign of acute splenic torsion; a triangular hyperechoic area at the hilus between the veins and the splenic parenchyma that is continuous with the hyperechoic mesentery. In a group of animals where acute splenic torsion was part of the ultrasound report differential diagnosis, we compared findings in dogs with torsion with findings in dogs with other splenic conditions. The presence of a hilar hyperechoic perivenous triangle was significantly associated with splenic torsion (P = 0.005). We speculate that this sign is associated with torsion because of the secondary severe, diffuse splenic enlargement. Although not pathognomonic, this sign could be used to more accurately diagnose splenic torsion in light of other findings consistent with this condition.  相似文献   

ASSOCIATION BETWEEN RENAL HYPOECHOIC SUBCAPSULAR THICKENING AND LYMPHOSARCOMA IN CATS     

ALEJANDRO VALDÉS-MARTÍNEZ  RACHEL CIANCIOLO  WILFRIED MAI 《Veterinary radiology & ultrasound》2007,48(4):357-360

The purpose of this study was to investigate the association between renal hypoechoic subcapsular thickening observed ultrasonographically and the presence of renal lymphosarcoma in cats. The ultrasonography database was retrospectively searched for cats that underwent ultrasound examination and ultrasound guided needle renal aspirate, renal biopsy, or necropsy. One radiologist unaware of the final diagnosis evaluated the images for the presence of hypoechoic subcapsular thickening and other abnormal findings. Fifty-four cats met the inclusion criteria. Hypoechoic subcapsular thickening was found in 21 cats of which 17 had lymphosarcoma; the remaining four cats had a different diagnosis. Eleven out of 33 cats without hypoechoic subcapsular thickening were positive for lymphosarcoma, and the rest had a different diagnosis. There was a significant association between hypoechoic subcapsular thickening and renal lymphosarcoma (P = 0.001). The positive predictive value of hypoechoic subcapsular thickening for lymphosarcoma was 80.9% and the negative predictive value was 66.7%. The sensitivity and specificity of hypoechoic subcapsular thickening for the diagnosis of renal lymphosarcoma were 60.7% and 84.6%, respectively. The results of this study indicate that the presence of hypoechoic subcapsular thickening in feline kidneys is associated with renal lymphosarcoma.  相似文献   

饲粮纤维来源对合浦鹅生产性能、血清生化指标和养分代谢的影响     

夏中生  麻艳群  杨家晃  张梅兰  廖玉英  麦伟虹  周恒 《畜牧与兽医》2006,38(7):7-10

选取体重相近、健壮的4周龄合浦鹅60羽,随机分为稻草粉组、玉米秸秆粉组和花生藤粉组,每组20羽,饲养42 d。于8周龄时从上述试验组中各选取5羽体重接近的鹅,测定其对3种纤维来源的饲粮养分的利用率。结果表明,(1)饲喂含粗蛋白质约为13.80%,粗纤维约为8.0%的饲粮,稻草粉、玉米秸秆、花生藤用作饲粮纤维来源,不影响合浦鹅的日增重、血清生化指标和屠宰性能(P>0.05)。(2)花生藤粉组饲粮的中性洗涤纤维、半纤维素和无氮浸出物的表观代谢率极显著高于其他2组(P<0.01);稻草粉组和花生藤粉组的饲粮粗蛋白质、能量的代谢率显著高于玉米秸秆粉组(P<0.05)。  相似文献   

当前广西柑橘无病苗木生产和推广工作中应当重视的几个问题     

莫健生  刘升球  邓光宙  陈传武  付慧敏 《广西园艺》2007,18(5):11-14

在2005年12月由广西区农业厅和桂林市人民政府联合举办的“全区成功防治柑桔黄龙病交流培训会”的推动下，全区各地都将柑桔无病苗木生产提到了政府议事日程上，一些主产区已建起了自己的无病苗圃，开始柑桔无病苗木的生产。2006年国家农业部下达“广西桂林市柑桔无病良种繁育基地”项目由广西柑桔研究所承担。  相似文献   

掌握好科学要点,提高散户夏季饲养肉用商品鸭的技术水平     

麦树成  谢少娟  陈丽美  陈丹丹 《广东饲料》2007,16(3):29-31

本文就如何提高生产管理的技术水平和经济效益,谈谈肉用商品鸭散户饲养管理的一些看法。1选择优良品种饲养肉用商品鸭目前基本选择樱桃谷杂及丽  相似文献   

柑桔新品种桂橙一号适应性试验研究     

雷新南  甘海峰  梅正敏  肖远辉  傅翠娜  麦适秋  陈腾土 《广西园艺》2011,22(1):11-13,17

本文主要对新品种桂橙一号在各试验点的物候期、生长结果特性、果实品质及其抗性进行了观察研究.结果表明,立地条件有水田和旱地,枳砧苗定植和清见、脐橙、椪柑中间砧,以及酸桔砧清见中间砧的桂橙一号遗传变异稳定,保持其风味浓甜、脆嫩化渣等优良特性.  相似文献