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潘怀军 《宁夏师范学院学报》2011,32(3):65-68
通过2009年~2010年对御谷、＂朝牧一号＂稗子、籽粒苋等一年生牧草品种引种试验观测,这三个品种的牧草适应性广,在本地均能较好地生长.其中御谷和籽粒苋表现最好.具有产草量高,再生能力强等优势.御谷和籽粒苋鲜草产量分别为76157 kg/hm2和70045 kg/hm2,较当地主要种植的草高粱品种分别提高132%和114%,干草较草高粱分别增加15598 kg/hm2和5808 kg/hm2.因此,御谷、籽粒苋可以代替本地主要种植的一年生草高粱牧草品种,在当地大面积推广. 相似文献
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在皖东地区对7个紫云英品种的物候期、主要经济性状进行观测,结果表明:7个品种的生育期都能满足皖东地区稻-肥栽培模式需求;其中闽紫6号、弋江籽在鲜草产量和鲜草中养分含量等方面表现优异,可以作为该地区紫云英绿肥的优先选择品种. 相似文献
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不同小麦品种在不同土壤条件下种植、不同单位检验品质的综合研究表明：（1）强筋小麦与普通小麦产量处于同一水平,强筋小麦品种之间的产量差异明显.不同土壤条件对小麦产量的影响小于不同品种对产量的影响.（2）品种类型之间籽粒黑胚率无明显差异,品种间差异显著;粘土地黑胚率降低、角质率高.（3）品种类型之间籽粒蛋白质、湿面筋含量无明显差异,但强筋小麦加工品质指标明显高于普通中筋小麦.土壤条件对小麦品质的影响是复杂的,沙质土壤对湿面筋提高不利,有利于稳定时间的提高;土壤对蛋白质含量影响较小.（4）不同化验单位对小麦品质检验的结果差异较大. 相似文献
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紫花苜蓿与意大利黑麦草混合青贮发酵品质研究 总被引：2，自引：0，他引：2
为研究不同比例紫花苜蓿与意大利黑麦草混合青贮的发酵品质,试验将两种牧草切割至1-2cm,按照鲜草质量比2：8、3：7、4：6和5：5等分为A、B、C、D四个处理组,充分混合后进行青贮。试验结果：各组青贮料的pH值和干物质含量均随青贮时间呈降低趋势,在青贮30d时,A、B组pH值约为4．1,显著低于C、D组的4．30左右（P〈0．05）;干物质含量B组显著高于C、D组（P〈0．05）,但与A组之间差异不显著（P〉0．05）;AN／TN的含量随着发酵天数的增加均持续升高,B组的AN／TN含量在青贮前3d稍高于其它三组,而3d后均低于其他三组,且在30d时与含量最高的D组差异显著（P〈0．05）,但与A、C组差异均不显著（P〉0．05）。青贮料中可溶性糖含量在青贮过程中均呈逐渐降低的趋势,其中在青贮前14d均以A组的WSC含量最高,青贮30d时,B组WSC含量最高,但各组之间差异均不显著（P〉0．05）。在青贮30d时,乳酸含量A、B组显著高于C、D组（P〈0．05）;与C、D组相比,B组乙酸和总挥发性脂肪酸含量低而乳画蔓／乙酸比值高,且差异均显著（P〈0．05）。结果表明：采用意大利黑麦草与紫花苜蓿混合青贮可以获得品质优良的青贮饲料。且以鲜草质量比3：7的混合青贮较为适宜。 相似文献
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目的:以耐阴、富集氮磷钾、鲜草或种子产量高为目标选育绿豆新品种,丰富绿肥作物种质资源。方法:凤绿1号是2014年采自湖南长沙的野生绿豆品种自然变异单株,经多年的系统选育形成新品系。2018—2020年连续3年进行田间品系比较试验。结果:鲜草平均产量为18 076.5 kg/hm2,比对照增产16.2%;其种子平均产量为3 100.5 kg/hm2,比对照增产29.3%;且具有耐阴、抗倒伏、富钾的特点。遂命名为‘凤绿1号’。结论:该品系表现出作为绿肥的多种优良特性,2022年通过安徽省非主要农作物品种鉴定登记委员会审定,准予推广,审定编号为皖品鉴登字第2108015。 相似文献
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对几个不同冷季型草坪草品种苗期形态指标和生理指标观察和比较.结果表明：在表观特征上,黑麦草“绅士”、高羊茅“自豪”、和“千年盛世”等三种冷季型草坪草品种表现较好,具有良好的观赏价值;在生理指标上,草地早熟禾的脯氨酸含量、可溶性糖含量、丙二醛含量和根系活力都比其它几个品种高,但其外观品质和观赏价值最差.综合质量评价表明：“自豪”的综合效果最好,生长前期最适宜于本地区生长. 相似文献
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对不同抗虫棉品种间几个主要性状的差异显著性、遗传力及相关性进行了分析。结果表明：在不同品种间，生育期、果枝数等几个主要性状差异显著；遗传力大小顺序为：皮棉产量〉霜前皮棉产量〉株高〉节他〉生育期〉果枝数；生育期与节位、霜前皮棉产量与皮棉产量呈极显著正相关，生育期与霜前皮棉产量、果枝数与节位呈极显著负相关。 相似文献
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平菇(糙皮侧耳)是一种广泛栽培的食用菌,在平菇的栽培过程中人们较多地追求其生物学产量,对其品质即营养价值的高低考虑甚少。到底哪些品种产量高且营养价值也高,我们选取了6个栽培面积较大的平菇品种,对其成熟子实体的含水量、蛋白质、糖、纤维素含量及其生物学产量进行了一系列的生化分析和测定。已选择出适合我地区菇农栽培的两个较好品种。 1 材料与方法 相似文献
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本研究从新采集的鲜牛奶、蔬菜及青草中分离筛选到数株乳酸菌.通过凝乳实验、生理生化实验、耐性实验确定两株为胞外多糖产量较高的乳链球菌PB1和PB6,其中PB1菌株初步鉴定为乳脂链球菌. 相似文献
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A series of laboratory and pot experiments carried out to examine the role of soil microbial biomass in red soils' nitrogen availability and productivity showed that soil available N (NA), dry matter yield (DMY) of ryegrass, and plant uptake of nitrogen were each closely correlated with microbial biomass-C (Cmic) or -N (Nmic), suggesting that soil microbial biomass is a very important nitrogen pool available to plants in red soils. After correction for the substrate effect, the computed turnover of the Nmic in three tested soils ranged from 63 to 250 days. Soils with low Nmic or light texture generally had higher Nmic turnover rate than those with high Nmic or heavy texture. These results showed that soils with low Nmic, microbial biomass could also play an important role in the availability of nitrogen to plants due to these soils' high turnover rate. 相似文献
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试验表明,施肥对高粱杂交草的生长及干物质积累影响显著.不施氮肥的高粱杂交草植株细小,叶片黄化,老叶提早脱落;施氮植株茎杆粗壮,叶色浓绿,但易于遭受虫害.施用氮肥能极显著地增加高粱杂交草的株高,在不施氮肥的情况下,施用磷肥则对株高有抑制作用.氮肥也是影响高粱杂交草干物质积累的主要因素,施用氮肥的各处理干物重均极显著高于不施氮的处理. 相似文献
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The inclusion of atrazine with 2-hydroxypropyl-β-cyclodextrin(HPCD) was synthesized by ultrasonic method, and it was characterized by UV, XRD and 1H NMR. The solubility in water and the bioactivity of the inclusion were also studied here. The results indicated that the UV maximum absorption wavelength of the inclusion remained at 223 nm, while its intensity decreased. The XRD peaks of atrazine disappeared, weakened and shifted in the inclusion, and the chemical shift of H-3 and H-5 of cyclodextrin inner cavity led to the upfield. The characterization data showed that the atrazine-HPCD inclusion had already formed. At the same time, the solubility of the atrazineHPCD inclusion in water became 20.08 times as that of atrazine. Moreover, the atrazine-HPCD inclusion had better herbicidal activity. When the concentration of the inclusion was 6.5 mg/mL, the inhibition ratios of the inclusion to taproot length, taproot fresh weight, sprout length and sprout fresh weight of barnyard grass were 66.96%, 57.22%, 70% and 57.53%, respectively, which were all higher than those of atrazine. 相似文献
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惠州甜玉米珠玉2号的高产栽培技术研究 总被引：2，自引：0，他引：2
为了进一步探讨珠玉2号高产甜玉米品种的栽培技术,在广东省惠州地区选用珠玉2号品种,系统比较了不同栽培方式对甜玉米生长发育及产量的影响.结果表明：栽培方式对玉米生长发育及产量影响很大：种植甜玉米珠玉2号采用方块营养土薄膜保温育苗带土定向移栽的半膜覆盖栽培比露地直播鲜穗平均单产增加57.52%;其经济效益综合评价排名第一.它能提早播种季节,增加鲜穗产量,错开销售旺季,延长供应季节,提高经济效益. 相似文献
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不同覆盖物覆盖对旱作水稻田间生态环境及产量的影响 总被引：3，自引：0，他引：3
采用大田随机区组试验设计研究了地膜、纸膜、麦秸、油菜壳、青草五种不同覆盖物覆盖对旱作水稻田间生态环境及产量的影响。结果表明:油菜壳、麦秸、青草覆盖处理具有良好的隔热、吸水、保水作用,增加土壤的含水量,促进旱作水稻生长,有很好的增产效果,较对照分别增产1035.5kg/hm2、918.8 kg/hm2、566.9 kg/hm2,增幅为19.7%、17.5%、10.8%,增产达极显著水平;地膜覆盖具有增温、保水效果,较对照增产377.9kg/hm2,增幅为7.2%,增产达显著水平;纸膜覆盖处理较对照增产不显著。 相似文献
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王波 《安徽科技学院学报》2002,16(3):22-24
玉米播后苗前用五种除草剂对苗期杂草进行防除.结果表明:90%禾耐斯+48%百草敌(水剂)和50%的都阿悬乳剂对玉米田一年生杂草防效均较好,其株防效及鲜重防效分别达92.4%、87.6%、97.3%、95.0%;而480克/升拉索乳油,50%乐丰宝对禾本科杂草的防效较好,其株防效及鲜重防效分别为87.9%、93.1%、87.7%、95.5%. 相似文献
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Studies on the changes of West Lake's zoobenthic communites after Qiantang River water was pumped into it 总被引：3，自引：0，他引：3
During Jan. 1995 to Dec. 1996, monthly investigations on the zoobenthic communities of West Lake, samples were collected from
six sampling stations. A total of 26 species of macrozoobenthos were identified. The seasonal changes in density and biomass
of zoobenthos in this lake were analyzed. The annual mean densities were 980∼2751 ind/m2 and mean biomass was 19.69–122.80 g/m2. The densities in winter and early spring were higher than those in summer and autumn. Comparative study of theprevious data
(1982 to 1983) collected by the authors, showed that the succession of zoobenthic communities, dominated byProcludius choreus in density andBellamya purificata in biomass, had been occurred in Xiaonan sub-lake after Qiantang River water was drawn into it; and that the species and
biomass of zoobenthos were then increased and the density was decreased. In other sub-lakes, the dominant species wereLimnodrilus hoffmeisteri andTokunagayusurika akamusi in density andBranchiura sowerbyi andTokunagayusurika akamusi in biomass. The water quality was bad in these sub-lakes because these dominant species are indicators of eutrophication.
According to the Margalef index and Goodnight index, West Lake is still an eutrophic lake. Only the water quality of Xiaonan
sub-lake was improved after water drawn from the Qiantang River was introduced into it.
Project supported by the Evironmental Protection Bureau of Hangzhou, China. 相似文献