嫁接、环剥对铁在果树体内分配的影响     

王秀茹  薛进军  台社珍  张福锁  李绍华 《果树学报》2004,21(6):603-605

嫁接方法、环剥对铁在果树体内的分配有影响。59Fe试验结果表明,室内营养液培养的2年生长富2/八棱海棠腹接、劈接和切接叶中59Fe的分配比例分别为4.10%、1.06%、1.21%,腹接的品种叶中铁含量显著高于劈接和切接,环剥明显影响铁在叶中的含量,室内营养液培养的八棱海棠苗在环剥、环割和不处理对照叶中59Fe的分配比例分别为8.1%、17.2%、31.7%,各处理间差异均达显著水平。  相似文献   

环剥对苎麻开花的诱导效应   总被引：1，自引：1，他引：0  

周瑞阳 《作物学报》1995,21(2):240-243

研究了５个品种（系）、３个环剥时期及两种密度下,环剥对苎麻（短日植物）开花的诱导效应。结果表明：环剥能诱导头麻成熟期已有花芽分化的品种（系）于５至６月的自然长日下只开雄花,比短日（１０小时光照）处理株花蕾多、花期长,但环剥不能诱导同等条件下无花芽分化的品种开花。对成熟茎环剥比成熟前环剥、稀植比密植表现出更好的诱导效果。  相似文献   

环剥及折梢诱导苎麻成花的比较研究     

周瑞阳  魏国平  朱正蓉 《作物学报》1997,23(1):66-69

比较折梢与环剥对圆叶青及黄荆皮品种成花诱导效应的差异。对圆叶青,折梢远不及环剥的成花诱导效应,但黄荆皮的折梢与环剥处理株几乎具有同等的成花诱导效果并优于圆叶青。环剥及折梢应于6月上、中旬进行。折梢角度应为90°左右。  相似文献   

Parthenocarpic fruit production in loquat (Eriobotrya japonica Lindl.) by using gibberellic acid     

C. Mesejo  C. ReigA. Martínez-Fuentes  M. Agustí 《Scientia Horticulturae》2010

This study evaluates the effect of gibberellic acid (GA₃) in inducing parthenocarpy in ‘Algerie’ loquat, as well as the optimum treatment conditions and associated techniques, hand thinning and ringing, to produce seedless fruit with high enough quality for fresh consumption. GA₃ applied in the course of the phenological growth stages 504–508 of the BBCH-scale produced seedless fruits, with the magnitude of the response depending on the concentration applied and number of treatments. Percentage of panicles bearing seedless fruitlets significantly increased with increasing GA₃ concentrations up to 100 mg l⁻¹ and significantly and positively correlated with the number of treatments applied. Trees treated three times with 100 mg l⁻¹ developed more than 90% of panicles bearing almost 7 seedless fruits per panicle, which were smaller in size, drier and slightly acid but similar in TSS concentration and skin colour than seeded fruits from untreated trees. Fruit thinning to 3 fruits per panicle did not increase seedless fruit size, but ringing performed at the onset of cell enlargement stage, growth stage 702 of the BBCH-scale, significantly increased fruit size by 12–15%, depending on the year. Trees treated three times with 100 mg l⁻¹ of GA₃ and ringed produced 26 kg, on average, of seeded fruit of suitable commercial quality.  相似文献   

中国枣树新害虫—皮暗斑螟研究初报   总被引：1，自引：0，他引：1  

王思政  黄桔  宋吉皂  王连捷 《华北农学报》1993,(1)

枣树开花后于主干进行环剥是枣树丰产的措施之一,但枣树在环剥以后,常有昆虫于愈伤组织内潜蛀为害,严重影响其伤口愈合,当年减产可达15%～20%,如不及时防治,数年后可造成树体死亡.1990～1991年.对其进行了田间和室内饲养观察.现已查明这是中国枣树新害虫—皮暗斑螟(Europhera batanyensis Cara-dja)为害所致.该虫属鳞翅目(Lepidoptera),螟蛾科(Pyralidae),斑螟亚科(Phycitinae).  相似文献