植物生长延缓剂对中华猕猴桃幼树生长结果的调控研究

A STUDY ON THE EFFECT OF B_9 AND PP_(333) ON REGULATING THE GROWTH AND DEVELOPMENT OF PLANTLETOF ACTINIDIA CHINENSIS PLANCH

魁蜜（Ｋｕｉｍｉ）、金丰（Ｊｉｎｇｆｅｎｇ）均是我国南方中华猕猴桃（ＡｃｔｉｎｉｄｉａｃｈｉｎｅｎｓｉｓＰｌａｎｃｈ．）商品生产基地的主要栽培品种。１９８３～１９８５年和１９９０～１９９１年在奉新和南昌两地，分别在不同的时期用不同浓度的Ｂ＿９和ＰＰ＿（３３３）对这两个品种进行喷射。试验结果表明：２０００～２５００ｍｇ／ｋｇ的Ｂ＿９或２０００ｍｇ／ｋｇ的ＰＰ＿（３３３）对中华猕猴桃幼树控长、促花、增产和增加果实硬度，均有良好的效果，且无副作用。尤以Ｂ＿９抑制营养生长、改变新梢的生长节奏，效果最好。最佳的喷射时期，是在幼树新梢旺盛生长开始时进行，可以有效地控制营养生长，改变新梢的生长节奏，减少了新梢的生长量，其生长量为对照的３９．７％～４０．３％。同时，单叶面积、单叶鲜重、ＳＬＷ、ＳＬＤＷ均比对照高，叶色加深，显著地提高了叶绿素含量，从而提高了光合速率，而且有诱导幼树成花作用，平均单株花量为对照的１．６２～２．１３倍，更可贵的是能增加果实的硬度，有利于贮藏的运输。

The effect of B_9 and PP_(333) on regulating and controlling the growth and devdopment ofActinidia chinensis Planch was studied.The results indicated that the treatment of 2000mg/kgB_9 or PP_(333) effective to a certain extent,and that of B_9 was more effective.The applica-tion of B_9 or PP_(333) could inhibit the height of the plant branch,promote the developmont ofthe flower,and increase the yield and the horrdness of the fruit.The Chlorophyll content wasincreased after the B_9 or PP_(333) treatment,and the greeness of the leaf darkened.Moreover B_9or PP_(333) had a significant effect on promoting the hardness of the fruit and increasing the flow-er number.