论文部分内容阅读
在福建邵武地区杉木无性系采穗圃中，对４～６年生的采穗母株进行了连续３ａ的定株观测，以了解不同处理下母株萌芽、生长规律，并进行了采穗圃施肥初步试验。结果表明：采穗母株萌芽发生有较强的规律性，８月下旬全面清条后，９月为孕芽期，１０月为芽条速生期，１１月为芽条生长缓慢期，直至停止生长。母株全年萌生能力最强为４～５月，其次为８～９月；而萌条生长速度较快在６～７月，９月次之，且与月均温相关密切。施肥试验结果表明：施尿素与施复合肥均比对照显著增产，且两肥种的增产效应无显著差异；以３月初和８月底两次施肥效果最好，全年四次产条量总的增产率为５４．０％～５６．９％，每次施用量以每公顷１８７．５～２２５ｋｇ的尿素或复合肥为宜。根据采穗母株的萌生规律，以及已有的树体管理、土肥管理理论和实践，提出了“一年三采三插三管”的采穗圃管理制度。
In Shapotou area of Fujian Cunninghamia apiculata nursery, 4-6 years old spike mother plants were observed for 3 consecutive years in order to understand the plant under different buds growth, growth and fertilization spawn garden Preliminary test. The results showed that the sprouting of spawning mother plants had a strong regularity. After finishing the spawning in late August, the germination period was September, the fast growing period of buds in October, and the slow growing period of buds in November. Grow. The strongest germination ability of the female parent was April to May, followed by August to September, while the growth rate of the adventitious sprout was faster in June to July and September, closely related to the average monthly temperature. The results of fertilization experiment showed that urea application and application of compound fertilizer significantly increased yield compared with the control, and no significant difference was observed in the yield-enhancing effect between two fertilizer types. The results showed that the best fertilization effect was achieved in early March and the end of August, Yield increase rate of 54.0% ~ 56.9%, each application rate of 187.5 ~ 225kg per hectare of urea or compound fertilizer is appropriate. According to the sprout law of spike mother plant, and the existing tree management and soil fertility management theory and practice, the management system of scion nursery is proposed.