侧柏苗(1+0)施用氮、磷、钾效果的研究

›› 1989, Vol. 25 ›› Issue (5): 401-409.

侧柏苗(1+0)施用氮、磷、钾效果的研究

沈佐孙时轩屠泉洪

北京林业大学

收稿日期:1988-06-11 修回日期:1900-01-01 出版日期:1989-09-25 发布日期:1989-09-25

A STUDY ON THE EFFECT OF NITROGEN PHOSPHORUS AND POTUSSIUM FERTILIZERS ON SEEDING(1+0) OF ORIENTAL ARBORVITAE(_{PLATYCLADUS ORIENTALIS} (LINN) FRANCO)

Shen Zuo,Sun Shixuan,Tu Quanhong

Beijing Forestry University

Received:1988-06-11 Revised:1900-01-01 Online:1989-09-25 Published:1989-09-25

摘要/Abstract

摘要： 我们给侧柏播种苗用过磷酸钙作基肥,等幼苗出土后用氮和钾作追肥。用⁽¹⁵⁾N及⁽³²⁾P示踪测定幼苗开始吸收N与P的时期。结果:(1)侧柏一年生播种苗,凡施N的处理苗木质量都有明显地提高;(2)磷对侧柏苗的作用次于氮,但磷、氮配合使用效果更好;(3)在本试验地培育侧柏播种苗,产合格苗210万株/ha,最佳施肥量每公顷N 150—200kg,P₂O₅ 100—200kg。N与P的比例为N=3-2,P₂O₅=2-1,N+P=300—400kg;(4)侧柏苗在生侧根之前即能吸收P和N;(5)科学施肥使合格苗产量与经济效益都比对照提高81.3—99.7%。

关键词: 侧柏播种苗, 苗圃地施肥, 最佳N, P比例, 最佳施肥量, 产量反应曲面方程

Abstract: Studies on the influence of proportion and amount of N, P and K on grouth of Oriental arborvitae (_{Platycladus orientalis} (Linn) Franco) seedling (1+0) were made.Seeds were sown on seedbed in nursery. Calcium Superphosphate was used as ground fertilizer and N and K as additional fertilizers after emergence of the seedlings. The time of absorbing N and P by the seedlings was traced by radioactive isotopes ¹⁵N and ³²P.The results are: (1) the 1-year old seedling reacted readily with N-fertihzer. Growth of the seedling was significantly increased. The most satisfactory result occurred when N was applied with P. (2) In effect P was only next to N and was necessary to obtain the maximum quantity of up to standard seedlings to achieve the best monetary result. (3) The optimal quantities of fertilizers to be applied was N 150-200kg/ha and P₂O₅ 100-200kg/ha for production of 2.10million qualified seedlings per hectare. The best proportions for N and P on moist loess soil in our experiment were 3—2 to 2—1. N+P=300—400kg. (4) N and P could be absorbed by the seedlings before lateral roots appeared. (5) Application of fertilizers would increase by 81.3%—99.7% of seedling production and economic benefit respectively over comparison.

Key words: Platycladus orientalis (Linn) Franco seedling, Application of fertilizers in nursery ground, The best proportions of N and P, The optimal quantities of fertilizers to be applied, Equation of yield response surface.

沈佐孙时轩屠泉洪. 侧柏苗(1+0)施用氮、磷、钾效果的研究[J]. , 1989, 25(5): 401-409.

Shen Zuo;Sun Shixuan;Tu Quanhong. A STUDY ON THE EFFECT OF NITROGEN PHOSPHORUS AND POTUSSIUM FERTILIZERS ON SEEDING(1+0) OF ORIENTAL ARBORVITAE(_{PLATYCLADUS ORIENTALIS} (LINN) FRANCO)[J]. , 1989, 25(5): 401-409.