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基质栽培对西瓜甜瓜产量和品质的影响 总被引：11，自引：0，他引：11
以土壤栽培为对照，研究了基质栽培对西瓜甜瓜产量和品质的影响。结果表明，基质栽培的西、甜瓜分别比对照增产26％、13％，每hm^2经济效益净增17242、6757元；基质栽培对西、甜瓜品质影响不大；基质栽培条件下氮素养分盈余量较低，平衡指数低于对照。 相似文献
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不同施肥量对甜瓜光合特性、产量及品质的影响 总被引：1，自引：0，他引：1
以"一品天下208"甜瓜为试材,以土壤栽培及当地常规施肥为对照(CK),采用基质盆栽,研究了低、中、高3个施肥量处理(T1、T2、T3)对温室甜瓜光合特性、产量及品质的影响,以期探索适合关中地区温室甜瓜生产的合理施肥量,实现高产高效。结果表明:一定范围内,随着施肥量的增加,各光合特性指标逐渐增强,T2、T3处理的净光合速率差异不显著;与对照相比,T1、T2、T3处理的产量分别提高了11.2%、28.7%、16.4%;不同施肥量对甜瓜品质影响显著,且T2处理品质最佳。综上,T2处理下光合作用强且可得到较高的产量和较好的品质,故推荐采用基质盆栽,且施肥量为1hm~2施N 225kg、P_2O_5140kg、K_2O 150kg。 相似文献
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厚皮甜瓜冬春茬栽培整枝方式研究 总被引：3，自引：2，他引：1
为了探求不同栽培整枝方式对日光温室冬春茬厚皮甜瓜熟性、产量、品质和商品性状的影响,进行了4种栽培整枝方式比较试验。结果表明:甜瓜采收期以爬地栽培单蔓整枝方式最早,比吊蔓栽培单蔓整枝方式和爬地栽培双蔓整枝方式早3d,比对照爬地栽培3蔓整枝方式早8d。单果质量、总产量、可溶性固形物含量均以吊蔓栽培单蔓整枝方式最高。吊蔓单蔓方式单果质量(755g)高出对照335g;667m2总产量达2926kg,比对照增产56.6%;中心可溶性固形物17.5%,高出对照2个百分点;且甜瓜果面光洁,果色均匀,果形周正,口感风味好,商品性状优良。据此,建议冬春茬厚皮甜瓜保护地栽培宜推广吊蔓单蔓整枝栽培方式,以取得优质高产高效。 相似文献
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甜瓜有机生态型无土栽培基质的筛选 总被引：3，自引：1，他引：2
以金美丽甜瓜品种为试材,炉渣、菇渣、黄沙等为栽培基质材料,用发酵秸秆反应堆、复合肥代替营养液,进行甜瓜有机生态型无土栽培试验,分析比较5种配方组合基质对甜瓜生长、产量及品质的影响。结果表明,甜瓜无土栽培基质以泥炭∶珍珠岩∶菇渣∶炉渣(9∶3∶4∶4)+(2kg发酵生物秸秆反应堆+0.5kg复合肥)/m2配方最佳,在甜瓜幼苗生长期主蔓最长,采收后单果质量最大,相应的果实纵径、横径和果肉厚度均达到最大值,中心可溶性固形物为13.1%,折合667m2产量高达3264.3kg,显著高于对照和其他处理;其次为泥炭∶珍珠岩∶菇渣(9∶3∶8)+(2kg发酵生物秸秆反应堆+0.5kg复合肥)/m2配方。 相似文献
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雾培对网纹甜瓜生长和产量及品质的影响 总被引：2，自引：0，他引：2
以基质培和水培为对照,研究了雾培对网纹甜瓜植株生长、产量和品质的影响.结果表明:雾培网纹甜瓜的株高、茎粗、叶片数、根长、根体积、根系活力和根干物质积累均高于水培和基质培,说明雾培能促进网纹甜瓜植株生长,使其根系发达,长势旺盛.雾培网纹甜瓜单瓜重极显著高于水培和基质培;果实可溶性固形物和维生素C含量与水培和基质培差异不显著;雾培可溶性总糖含量显著低于基质培;有机酸含量显著高于水培,但与基质培差异不显著;蛋白质含量显著高于基质培,说明雾培在显著提高网纹甜瓜产量的同时果实品质有所下降. 相似文献
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为探索薄皮甜瓜高产高效栽培方式,以温州地方特色薄皮甜瓜品种白啄瓜为材料,以爬地栽培(A)为对照,设置立架栽培(B)和拱架栽培(C)2个处理,其667 m2种植密度分别为280、635、635株,研究不同处理方式对薄皮甜瓜品质、产量和经济效益的影响.试验结果表明,不同处理对薄皮甜瓜品质无显著影响,但对甜瓜产量和经济效益影响显著;对照A的单瓜质量显著高于B、C处理,单株产量最高,但因其种植密度低,单位面积产量和经济效益均低于B、C处理,B、C处理的667 m2产量分别为3 688、3 706 kg,约比对照A高900 kg;B、C处理的667 m2纯收益较高,分别为2.08万、1.99万元.综上所述,为实现甜瓜高产高效栽培,应选择立架或拱架栽培. 相似文献
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用6个不同南瓜砧木品种嫁接薄皮甜瓜,研究南瓜砧木对薄皮甜瓜生长、产量及品质的影响。结果表明,各嫁接组合抗枯萎病能力、产量方面都显著提高,但抗白粉病能力及品质方面都有所降低。综合各方面看,选用砧木达美嫁接,嫁接苗成活率高,嫁接后甜瓜产量显著提高,比对照增产49.4%,抗枯萎病能力显著增强,中心含糖量和口感风味与对照相当,可作为今后嫁接栽培的理想砧木品种。 相似文献
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The effects of combinations of salinity (no salt, 2000 p.p.m. or 4000 p.p.m. of CaCl2 and NaCl, 1:1) and water table (30 cm, 60 cm or 90 cm from the soil surface), on the vegetative growth and tolerance of ‘Golden Japanese’ plum and ‘Mit Ghamre’ and ‘Balady’ peaches were studied. The plants were grown in lysimeters. The growth of the trunk, total shoot length, the increase in shoot length per cm and the fresh weight of top, root and total plant were reduced with increasing salinity of the irrigation water. The effect was accentuated when the plants were maintained at high water table level. The salinity treatments resulted in the death of 43%, 73% and 76% of the plants in the plum, and the ‘Mit Ghamre’ and ‘Balady’ peaches, respectively, indicating that the plum is more tolerant to salinity than the peach. The plants of the salinity treatments showed various symptoms of salt injury, such as leaf burn, defoliation, shoot die-back and finally death. In the peaches, salt injury started to occur in the first growing-season, whereas the salt injury appeared in the plum in the second growing-season. The symptoms were more pronounced in the 4000 p.p.m. treatment than in the 2000 p.p.m. treatment and were more pronounced at the high water table level. The salinity level was the predominant factor and the effect of the water table on the vegetative growth diminished with increase in the salinity level of the irrigation water. 相似文献
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AIM：To establish a fast, accurate and economical technique for culturing mouse pulmonary arteriolar smooth muscle cells (PASMCs), and to explore the effects of hypoxia on the proliferation and apoptosis of the PASMCs. METHODS：In sterile condition, the pulmonary artery was isolated from the male BALB/c mice by digesting with collagenase I, and the cells were cultured in fetal bovine serum-coated flask. Centrifugal procedure was not used during the cell passage. The cell morphology was observed under an inverted phase-contrast microscope. α-Smooth muscle actin was identified by immunocytochemistry and immunofluorescence. The effects of hypoxia on the proliferation and apoptosis of the PASMCs were detected by CCK-8 assay and TUNEL assay. RESULTS：PASMCs were identified by the methods of immunocytochemistry, immunofluorescence staining and observation of morphology. Unlike the rat PASMCs with typical subcultured peak-vally pattern, the mouse PASMCs showed a lot different without a peak-vally pattern. The cells could be subcultured after 5 d to 7 d and there was 3 to 5 generations depending on the activity of the cells. CCK-8 assay demonstrated that the A values of PASMCs exposed to hypoxia increased after 24 h (P＜0.05) as compared with normoxia. TUNEL result showed that the apoptotic index of the PASMCs in hypoxia decreased after 24 h (P<0.05). CONCLUSION：This technique for obtaining cultured mouse PASMCs is simple, fast, accurate and economical. The digestion time is easy to control. Hypoxia promotes the proliferation and inhibits the apoptosis of PASMCs. 相似文献
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小檗碱和壳聚糖抗蔬菜病原真菌活性测定及复合膜制备 总被引：2，自引：0，他引：2
研究了小檗碱和壳聚糖对几种常见蔬菜病原真菌的抑制活性,以及以小檗碱和壳聚糖为主料制备复合膜的方法,并测定了该膜的药物释放效果。试验表明:低浓度(0.234 mg/mL)小檗碱即可抑制辣椒炭疽病菌(Vermicularia capsici)等5种蔬菜病原真菌的生长。20 mg/mL浓度壳聚糖对番茄灰霉病菌(Botrytis cinerea)的抑制率高达65%,而对其余4种果蔬病原真菌也有一定的抑制作用。为了集成这2种天然化合物的优点,制备了小檗碱-壳聚糖复合膜,该膜具有缓释功能,在模拟外部环境(磷酸缓冲液,pH 6.8)条件下,20 d小檗碱累计释放率接近25%,提示其在果蔬贮藏抗菌中的应用价值。 相似文献
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Fresh onion seeds desiccated to 6.0% seed moisture content (SMC) were stored in various packaging materials under different storage conditions. Seeds packed in aluminum-laminated pouches beside those stored with silica gel at 25 °C maintained satisfactory germinability and vigour after 12 months. Desiccated seeds stored in moisture impervious containers produced more vigourous seedlings. Germination potential of onion seeds increased with reduced SMC besides storage in moisture impervious packets along with desiccants as physiological and biochemical attributes are regulated. Seed viability and vigour decreased with accelerated ageing due to increased lipid peroxidation, decreased activities of several free radical and peroxide scavenging enzymes. Electrical conductance of seed leachates also increased with ageing. Thus, adoption of appropriate storage temperature and moisture control techniques would significantly affect onion seed quality, which was due to minimum accumulation of free peroxide radicals and enhanced activity of free radical scavenging enzymes. 相似文献
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以大荔县冬枣种植区采集的发病枣果为试材,采用常规组织分离法进行病原菌的分离纯化,通过柯赫氏证病法则、形态学观察及分子生物学分析,研究鉴定了冬枣黑斑病和炭疽病的病原菌种类,并采用田间调查法对2种病害为害特征进行比较分析,以期为田间有效区分冬枣黑斑病和炭疽病为害症状,并快速判断其病原类型,及进一步深入开展精准防控提供参考和指导.结果表明:陕西大荔冬枣黑斑病的病原菌为细极链格孢(Alternaria tenuissima),炭疽病的病原菌为胶孢炭疽菌(Colletotrichum gloeosporioides).2种病害均主要为害枣果实,在枣果果腰或果肩上形成黑褐色病斑,可能同时存在且症状相近极易混淆,但在病斑表面、皮下及久置表型3个方面存在明显区别. 相似文献
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钾肥在小白菜和萝卜上的施用效果 总被引：6，自引：0，他引：6
采用盆栽试验方法研究了施用钾肥对小白菜、萝卜生长发育、产量、品质及钾素含量的影响。结果表明 ,施用钾肥对小白菜和水萝卜的株高、叶片数无显著的影响 ,但可提高水萝卜块根的产量 ,提高幅度为 31.0 4 %～ 97.93%。施用钾肥可提高小白菜和萝卜的蛋白质和VC含量 ,降低硝酸盐含量 ,增加植株的钾素含量 相似文献