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对茶树施用3种不同配比的Kemira肥料,结果表明,经过不同氮、磷、钾配比的Kemira肥料处理,土壤中有效磷,有效钾的水平和茶叶中氮、磷、钾各养分元素的含量均比仅施用氮肥的对照高,而土壤有效氮的含量低于对照,施用Kemira肥的各处理均改善了春茶某些生理生化指标,提高了茶叶的品质,同时增加了茶叶的产量和茶叶生产的经济效益。茶叶产量比对照增加5.44%~13.88%,经济产值增加3635~5717元/hm^2,增幅达到10.00%~15.72%。  相似文献   
2.
J. Uoti 《EPPO Bulletin》1975,5(4):419-424
Several Fusarium species occurred abundantly in spring cereal seed samples studied in 1966, 1968 and 1972 in Finland. A total of 17 species of Fusarium were isolated and identified. The most frequently isolated species were F. avenaceum (Fr.) Sacc., F. culmorum (W. G. Sm.) Sacc., F. poae (Peck) Wr. and F. tricinctum (Cda) Sacc. These species were found in more than 40% of the seed samples from 1972. The same 4 Fusarium species in addition to F. graminearum Schwabe were used in the pathogenicity test. Artificially inoculated spring wheat and barley seeds were grown in the field during the growing season of 1973. Of these 5 species F. culmorum was clearly the most pathogenic. This species significantly lowered the shooting percentage and the yield of both cereals. Foot rot assessment also revealed F. culmorum as the most damaging species. Natural soil-borne infection obviously increased the foot and root rot, and thus the soil-borne F. culmorum strongly affected all treatments. In the harvested seed F. poae dominated in all treatments, but F. culmorum still occurred most abundantly in the seed lot harvested from plots originally inoculated with this species.  相似文献   
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不同配比复混肥对柑橘产量和品质的影响   总被引:7,自引:1,他引:6  
柑橘施用不同配比复混肥结果表明,与试验前同期相比,土壤中有效磷、有效钾、有效钙、有效镁、有效锌和柑橘叶片中的钙、镁、锌、铁的含量增加;而土壤中碱解氮和有效铁以及叶片中的氮、磷、钾的含量则降低.施用不同配比复混肥提高了柑橘多花和中花的比率,降低了少花的比率,增加了柑橘产量;同时改善了柑橘品质,提高了柑橘种植的经济效益.与常规施肥对照相比,柑橘产量增加10.1~28.3 kg/小区,增幅为21.20%~59.5%;经济效益增加20 581.25~58 725.00元/hm2,增幅达21.4%~61.1%.喷施铁锌对柑橘的影响不大.  相似文献   
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