共查询到20条相似文献,搜索用时 312 毫秒
1.
2.
观察在不同温度和pH值条件下,鲍鱼菇8120和平菇P54菌丝体的生长情况。结果表明:鲍鱼菇8120菌丝适宜生长温度为20~33℃,最适温度为22-28℃。适宜pH值为5~8,最适pH7.2~8;平菇P54菌丝适宜生长温度为20-33℃,最适温度为25-31℃,适宜pH5~8,最适pH值为6-6.5。 相似文献
3.
野生巨大口蘑菌株的生物学特性试验结果表明菌丝生长最适碳源为淀粉;最适生长温度范围25℃~30℃,适宜的pH为8.0,黑暗条件下菌丝生长较好;耐CO2;最佳无机盐为MgSO4和KH2PO4;添加VB1对茵丝生长有利。 相似文献
4.
研究了不同碳源、氮源、温度、pH值和光照对蟹味菇菌丝生长的影响,并对蟹味菇工厂化栽培培养料进行了筛选。结果表明:菌丝最适生长温度25℃,最适pH为9.0,避光条件下培养的菌丝体色泽、长势较好。以麦芽糖为碳源,以蛋白胨为氮源,菌丝生长最快,长势旺盛。最适培养料配方:棉籽壳35%、木屑35%、麦麸25%、玉米粉5%、生石灰1%,生物学效率达到55.8%。 相似文献
5.
火龙果溃疡病和茎腐病病原菌的生物学特性测定 总被引:1,自引:0,他引:1
《中国南方果树》2017,(1)
测定火龙果溃疡病菌Neoscytalidium dimidiatum和茎腐病菌Fusicoccum sp.的部分生物学特性。结果表明,溃疡病菌菌丝在PSA培养基上生长最佳,最适生长温度32℃,最适pH值4~5,光照对菌丝生长影响不明显,菌丝对有机碳源葡萄糖和蔗糖利用效果最好,对有机氮源硝酸钾利用效果最好,喜好30~35℃、弱酸、富含有机营养基质的环境。茎腐病菌菌丝在PSA培养基上生长最佳,最适生长温度28℃,最适pH值4~6,光照有利于菌丝生长,菌丝对有机碳源蔗糖和有机氮源硝酸盐利用效果最好,喜好28~32℃、弱酸、光照充足、富含有机营养基质的环境。 相似文献
6.
7.
8.
9.
通过观测不同培养基、温度、pH值和光照条件下菌丝生长和孢子萌发情况,对Phyllostictacitrichinaensis生物学特性进行研究.结果表明,培养基中添加琯溪蜜柚叶汁可促进菌丝生长;菌丝生长的温度范围为10~35℃,适宜生长温度为25~30℃,最适生长温度为28℃,40℃时停止生长;菌丝生长的pH值范围为3~9,最适生长pH值为5~6,14天后在pH值7~9的OA培养基上菌落边缘会产生黄色素;分生孢子在25℃、pH值4的条件下萌发率最高,但萌发率低于45%;12小时光暗交替有利于菌丝生长;菌丝致死温度为55℃10分钟,孢子致死温度为50℃10分钟. 相似文献
10.
11.
12.
13.
14.
15.
16.
A method is described which can be used to estimate the most economical night-time greenhouse temperature for a particular crop. The method requires growth data, engineering data and economic data to produce a solution. Most critical are the growth data, which probably limit the usefulness of the method at the present time.An example is presented to illustrate the method. Growth-chamber data for tomato seedlings are used to obtain the sensitivity of that crop to deviations from the physiologically optimal night temperature. The available data seem to indicate that a 12 K deviation from that optimum results in a yield decrease of 20%. The recommended night temperature in the example is about half-way between the physiological optimum and the outside temperature. 相似文献
17.
试验表明,‘龙柱’碧桃嫁接繁育时,切接生产一级苗比例高达33. 4%,在4月上中旬气温较高时,采用蜡封、粗细0. 8~1. 0 cm接穗,成活率最高为90. 8%,适宜生产高端景观绿化苗;芽接时,采用砧穗粗细匹配、新采接穗、避开雨天、7月上旬~8月下旬适于嫁接,成活率高达94.6%,单株平均净收入为3.23元,高于切接苗0.19元/株,经济效益好。 相似文献
18.
果园生草试验及适生草种评价 总被引:1,自引:0,他引:1
试验以自然生草和自然生草+人工生草(紫花苜蓿、白三叶、红三叶、早熟禾、高羊茅和黑麦草)的‘寒富’苹果园为研究对象,以清耕为对照,研究了自然生草对土壤理化性质、微生物数量和酶活性的影响,并对自然生草条件下的人工草种进行了初步评价。结果表明,与对照相比,自然生草处理土壤pH值、有机质、全氮、全磷、碱解氮、速效磷、速效钾、细菌、真菌、放线菌、脲酶和磷酸酶明显升高,全钾增幅较小,但含水量降低了。通过适宜草种评价的初步研究可知,以生草覆盖为目的、刈割次数少的可选择白三叶、高羊茅和黑麦草等品种;为增加土壤有机质、提高土壤肥力,需要刈割用于覆盖的则应选择紫花苜蓿、红三叶等产草量较高的草种。 相似文献
19.
北京地区园林彩色植物的选优及应用 总被引:1,自引:0,他引:1
传统的园林彩色植物一般具有明显的季相特点,通常在秋季时变彩的比较多,而北京地区秋季短,风沙大,这些秋彩类彩叶植物很快就会凋落,观赏期比较短,不能满足园林彩化的高要求。为了延伸园林绿地上彩叶植物的观赏时间,于2009年开始从河南、河北、陕西、大连、沈阳、山东等地方引进了90种园林彩色植物,以常彩类彩色植物为主,经过3a的适应性栽培,并进行综合评价,筛选出81种适合北京地区生长的彩色植物,以期为北京地区的园林彩化提供参考依据。 相似文献
20.
An optimization of a sampling design aims at decreasing costs without losing necessary spatial information and desired precision
for estimation and mapping of vegetation cover. This study concentrates on investigating optimal solutions for sampling design,
considering both plot and sample size in terms of cost and variance estimated for global estimation and local landscape mapping
of overall vegetation cover used in the management of soil erosion. A geostatistical method was developed based on regionalized
variable theory and compared to a classical random sampling method for a case study in which optimal sampling was designed
for estimating and mapping vegetation cover. Cost is introduced into the sampling design in terms of measurement time. This
method has made it possible to seek optimal solutions for determining plot and sample sizes given a desired precision and
allowable survey cost budget for both local and global estimation. The results show that the geostatistical method is more
cost-efficient than the classical designs because it accounts for spatial dependence of variables in the sampling design.
Moreover, plot size affects kriging standard error of the local estimate more significantly than sample size, while sample
size has more effect on precision of the global estimate than does plot size. 相似文献