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我国板栗栽培,历来沿用实生繁殖,其后代单株的产量和品质差异很大,种性混杂,良莠不齐,劣多优少。我县也是如此。据1975年普查统计,全县树令在十年以上而未结果的树有52000多株。许多树令20—30年以上的树,不结果或很少结果,也有的结棚而不结实。即使已经结果的树,在大丰收的1976年,平均株产只有2.8斤,亩产不足百斤。故研究改造劣种低产大树的技术,变低产为高产,具有重要的意义。
China’s chestnut cultivation, has always been the use of real-life reproduction, the offspring of large differences in the yield and quality of the plant, mixed species, good and bad, bad and more excellent less. My county is also true. According to the 1975 census, the county has more than 52,000 trees with more than 10 years of trees. Many trees make trees more than 20-30 years old, with little or no result, and some without fruiting. Even in the tree that has already ended, in 1976, with an average yield of only 2.8 kg, the yield per mu was less than 100 kg. Therefore, the study of transformation of inferior trees and low-yielding technology, change low-yielding high yield, of great significance.