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板栗在我国有悠久的栽培历史,由于长期采用实生繁殖,致使种性退化,产量低而不稳。山东省烟台市林科所自1969年开始进行板栗的良种选育工作,1985年经省级鉴定,共选出6个高产优质品种,获得1986年省科技进步二等奖。这些良种已在全省推广应用,增产效果极为显著。现将两个适于旱薄地栽培良种介绍如下: 一、清丰树冠紧凑,呈圆头状。果枝灰绿色,棚前芽盾形,中大饱满。叶片中大,浓绿色,正面蜡质层较厚。雄花序长8.5厘米,开放时淡黄色。栗棚近肾状形,栗实椭圆形,棕褐色,果顶茸毛较多。幼树枝
Chestnut cultivation in our country has a long history, due to long-term use of real reproduction, resulting in degenerative species, low yield and instability. Yantai City, Shandong Province Linke since 1969 began Chestnut breeding breeding work, in 1985 by the provincial appraisal, a total of six high-yielding varieties of high quality, won the 1986 provincial scientific and technological progress second prize. These varieties have been popularized and applied in the whole province, and the yield increase effect is extremely remarkable. Now two suitable for dry cultivation of cultivated species introduced as follows: First, Qingfeng crown compact, was round-shaped. Fruit branches gray-green, shed before the bud shape, full large. Large leaves, dark green, thick waxy front. Male inflorescence 8.5 cm, yellowish when open. Lipen nearly kidney-shaped, chestnut oval, brown, fruit top hair more. Young branches