摘要
在１１ 月上半月（ 立冬前后） ， 选择水稻收割后适宜育苗的水田作圃地， 不加翻耕， 按１４ ～１６ ｍ 苗床宽划沟除茬， 细整苗床， 施足底肥， 选用优质杉木种子播种育苗。此法育苗比翻耕法育苗平均省工８１０ 个·ｈ ｍ － ２ ， 省成本１ ６２０００ 元·ｈ ｍ － ２ ， 圃地利用率提高６０ ％ ， 土壤抗旱能力增加１０ 倍， 合格苗产苗量增加３７４万株·ｈ ｍ － ２ ， Ⅰ级苗和Ⅱ级苗分别增加１０８ ％ 和２６８ ％ ， Ⅲ级苗和等外苗分别减少１１１ ％ 和２８３ ％ 。杉木免耕法育苗省工省成本， 可明显提高苗木等级。
In the first ten days of November,the elite seeds of Cunninghamia lanceolata were sowed in the rice field which fitting seedling.The rise field after just harvesting was not plowed,but the seedbeds must be made carefully,and ground fertilizer must be applied with urea 375 kg·hm -2 and compound fertilizer 375～750 kg·hm -2 .The seedbed was 1 40～1 60 m in width,and the path(drainage ditch) between seedbeds was 0 20～0 25 m in width,with 0 30 m in depth.This no tillage seedling was more graet value than traditional seedling:workday saved by 81 0 labours per hectare,cost saved by 1 620 00 yuan per hectare,utilization percent of land raised by 6 0%,drought resistance of soil increased by 1 0 time,standard nursery stock augmented by 37 5 ten thousand plants per hectare,grade Ⅰ nursery stock and grade Ⅱ nursery stock increased by 10 8% and 26 8% respectively,and grade Ⅲ nursery stock and cull nursery stock decreased by 11 1% and 28 3% respectively.No tillage seedling could obviously heighten quality of nursery stock.
出处
《浙江林学院学报》
CSCD
1999年第3期318-321,共4页
Journal of Zhejiang Forestry College
关键词
杉木
育苗
免耕法
效益
Cunninghamia lanceolata
seedling
no tillage
benefit
