生物有机肥对老压砂地西瓜生长及产量影响
首发时间:2015-11-11
摘要:本文通过田间试验研究了不同生物有机肥对老压砂地西瓜生长、产量、品质和光合特性的影响。研究结果表明:在老砂地上(种植时间超过50年),与不施生物有机肥相比,施用生物有机肥能显著提高西瓜产量和水分利用效率,分别提高了19 %~44 %和17%~58%。在A、B、C、D和E 5种生物有机肥中,D肥和E肥具有显著促进西瓜生长发育的作用,同时D肥能提高西瓜果实可溶性固形物含量,从而提高西瓜的品质。C肥具有提高西瓜叶片光合速率和叶片水分利用效率的作用。总体而言,D肥(EM发酵+三色源菌剂+有机肥)是一种适宜老压砂地上施用的生物有机肥。
关键词: 植物营养学 老压砂地 生物有机肥 西瓜 水分利用效率
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The effects of bio-organic fertilizer on growth and yield of watermelon on the old gravel-mulched field
Abstract:A field experiment was carried out to study the effect of bio-organic fertilizer on growth and fruit yield of watermelon on the old gravel-mulched field(cropping time more than 50yr) in this paper. Results showed that the application of bio-organic fertilizer could improve significantly fruit yield and water use efficiency of watermelon by 19%~44% and 17%~58% respectively, compared with no bio-organic fertilizer treatment. Treatments of D and E bio-organic fertilizer promoted watermelon growth obviously among the five bio-organic fertilizers of A, B, C, D and E. At the same time, D bio-organic fertilizer could increase soluble solids content of fruit. Thus it improved the quality of watermelon. C bio-organic fertilizer increase net photosynthetic rate and water use efficiency of leaf. In a word, D bio-organic fertilizer (EM fermented + Sanseyuan inocula + organic fertilizer) is suitable for watermelon of old field with gravel-mulched.
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