1) controlled-release feritilizers
长效控释肥
1.
The influence of controlled-release feritilizers on the softwood cutting of Huiming Baicha was studied during rooting,while the mechanism of their effects on rooting was discussed.
研究长效控释肥对惠明白茶扦插生根的影响,并对其促进生根的机理进行了初步探讨。
2) release long effect fertilizer
缓控释长效肥
3) SFT slowly controlling releasing long-effective agent
SFT赛肥特缓控释长效剂
4) special long-effect controlled-releasing fertilizer
长效专用控释肥料
1.
Objective To study the possibility of using the special long-effect controlled-releasing fertilizer (SLECRF) for plant growing in the Controlled Ecological Life Support System (CELSS).
目的研究并验证长效专用控释肥料在受控生态生保系统中应用的可行性,为未来受控生态生保系统中高等植物的栽培提供合适的养分资源。
6) Slow release nitrogenous fertilizer
长效缓释氮肥
补充资料：长效肥
| 长效肥 slow-release fertilizer 溶解度低或养分释放缓慢、肥效持久的一类化学肥料。又称缓效肥。以长效氮肥居多。通常分为：①合成缓溶性有机氮肥。由尿素与甲醛或乙醛等有机物直接反应而成。主要有脲醛肥料，如脲甲醛、脲乙醛和异丁叉二脲等。含氮量31％～35％。②合成缓溶性无机肥。以磷酸镁铵为主，含氮9.02％，磷11.95％，镁15.65％，溶解度很低，在土中主要靠微生物分解。③包膜肥。颗粒表面包有一层半透性或不透性（难溶性）膜状物以减缓养分释放速度。常用的包膜材料有聚乙烯、硫磺、磷酸镁铵、树脂、石蜡和沥青等。如硫磺包膜尿素是较成熟的品种。除上述长效肥外尚有长效磷肥、钾肥、如聚磷酸铵、聚磷酸钾等。长效肥多用作基肥，施一次可满足作物整个生长期需要。施用量过大也不易使作物烧苗、徒长、倒伏。施用品种应视土壤类型和作物种类而定。用于蔬菜和禾谷类作物时应掺混少量速效性化学氮肥。包膜肥用于具有间歇灌溉条件下的水稻效果最佳。 |
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参考词条