甜柿生育规律及其早实丰产栽培试验

１９８７年以来，引种了日本的１３个完全甜柿品种和７个不完全甜柿品种，以及中国的“罗田甜柿”等，建立了甜柿品种资源圃。对２０个甜柿品种进行了生物学特性及其果实经济性状观测。在完全甜柿中，早熟品种伊豆，中熟品种次郎，晚熟品种富有、骏河是优良的大果型品种；在不完全甜柿中，西村早生为最早熟主栽品种，正月是特大果型极晚熟品种。在密植丰产栽培综合技术措施下，使甜柿园达到２年结果，３年投产，５￣７年最高产量达１

Studies on Reproductive Law and Precocity and Prolificacy of Non-astringent Persimmon

The non astringent persimmon cultivar germplasm bank, including 13 pollination constant non astringent(PCNA) and 7 pollination variant non astringent(PVNA) cultivars introduced from Japan and the local non astringent persimmon cultivar(Luo Tian),has been established since 1987. The biological features and economic traits of fruit crop for the 20 non astringent persimmon cultivars were investigated. The lzu(early ripening),Jirou(medium maturity),Fuyu and Suruga(late maturity)are larger in fruit size amongst PCNA cultivars. Nishimura is the earliest in fruit maturity and Shougatsu latest in maturity with the largest size fruit in PVNA cultivars. The experimental orchard,densely planted and intensively managed,began to bear fruits 2 years after planting,and produced desirable yield in the third year and reached the highest yield record of 14 987.10 kg/hm 2 in the fifth to seventh year.