桑园专用复合肥料研究

在多年(1986—1991)对桑园土壤、桑树营养特点进行研究,获得大量分析数据的基础上,提出桑园专用复合肥的配方。以专用复合肥与等量氮肥比较试验的结果表明:(1)盆栽试验:复合肥区增产桑叶21.69％—41.70％。(2)小区试验:复合肥区增产桑叶10.35％—23.22％。(3)中间试验:复合肥区增产桑叶14.67％—22.83％。(4)养蚕试验:复合肥区春秋两季平均,万头蚕产茧量提高3.95％、全茧量增加4.15％—11.79％、茧层量增加5.00％—12.50％、茧层率提高2.81％—7.40％。

STUDIES ON THE EXCLUSIVE COMPOUND FERTILIZER OF MULBERRY FIELD

Based on the research of mulberry field soil, mulberry nutrients and the large quantity of date obtained from 1986 to 1991,the authors presented an exclusive compound fertilizer recipe of mulberry field in this paper. The comparative examination of exclusive compound fertilizer with nitrogen fertilizer of the same quantity showed that; (1)Pot planting test:the mulberry leaf output of compound fertilizer plots increased 21. 69%-44. 7%(2)Plots trial: mulberry leaf production in compound fertilizer plots increased 10. 35%-23. 22% ; (3)Intermediate test:mulberry leaf yield in compound fertilizer plots increased 14. 57%-22. 33% ; (4)Silkworm rearing test:the average rearing results in spring and autumn silkworm showed that cocoon crop per 10 000 four-instar silkworms, whole cocoon weight, cocoon shell weight and cocoon shell percentage increased 3. 95%,4. 15%-11. 79%,5. 00% -12. 50% and 3. 81%-7. 40% respectively.