以干旱区绿洲土壤为供试土壤,采用盆栽试验研究外源Ni污染对芹菜生长的影响及在芹菜中的富集迁移。结果表明:外源Ni的添加在低质量分数下能够促进芹菜的生长,达到一定临界值后,则出现明显的毒害作用;随着土壤中Ni的添加质量分数的增加,芹菜体内的Ni含量也随之增加。统计分析表明对芹菜根部和地上部吸收累积Ni贡献最大的均为铁锰氧化态和碳酸盐结合态;芹菜通过根系吸收的Ni主要存在于根系组织中,根部富集能力明显大于地上部,外源Ni的添加明显抑制了其在芹菜体内的迁移能力。

Soil samples were collected from the arid oasis region and the characteristics of transfer and enrichment of Ni in soil-celery system through pot experiments were studied.The results showed that lower concentrations of Ni could promote the growth of celery,but it appeared obvious toxicity when reached a certain level.With the increase of concentrations of Ni added into the soil,the concentrations of Ni in celery roots and leaves also increased.Statistical analysis showed that Ni of Fe-Mn oxide-bound and carbonate-bound form had the greatest contribution to Ni accumulation in celery overground part and root.Ni Absorbed through the root mainly existed in root organization and the ability of enrichment in root was significantly greater than in overground part.The adding of Ni significantly inhibited its migratory ability in cerely.

为探索镉胁迫对芹菜产量和氮、磷、钾吸收及镉积累量的影响,采用盆栽试验方法,研究不同镉水平胁迫的芹菜产量和氮、磷、钾吸收及镉积累量的变化。结果表明,随着镉胁迫程度加重,芹菜心叶生长缓慢,甚至干枯萎缩,而外部叶片表现不明显;镉胁迫由轻到重时芹菜茎基直径和叶柄横径明显下降,芹菜减产2.21%~19.74%,氮、磷、钾吸收量低镉胁迫略有增加,中高镉胁迫时缓慢下降;芹菜镉吸收量随镉胁迫浓度增加而增加,低镉胁迫时芹菜镉质量分数已达到0.097 mg/kg(鲜重),超过国标(0.05 mg/kg(鲜重))1.94倍。

A pot experiment of different calcium on yield and cadmium uptake of Apium graveolens under cadmium stress was carried out to probe into effect of Cadmium stress on yield,nitrogen, phosphorus, potassium and cadmium uptake of Apium graveolens .The results showed that inner leaves of Apium graveolens grew slowly or wither under cadmium stress, but withering symptom in the outer leaves of Apium graveolens alleviated. The stem diameter and petiole diameter of Apium graveolens dramatically declined, their yield reduced from 2.21% to 19.74%, content of nitrogen phosphorus and potassium in Apium graveolens gently decreased along with cadmium stress aggravating. Levels of cadmium in fresh leaves of Apium graveolens was 0.097 mg/kg, beyond the safety qualification threshold level (0.05 mg/kg) for agricultural product safety requirements and original environmental requirements for non-environmental pollution vegetable.

为建立合理的甜瓜轮作体系,以甜瓜春甜三号、番茄东农709、菜豆八月绿、芹菜实心芹以及长白大葱为供试品种,在温室中采取垄作(芹菜采用平畦撒播方法)方式,研究设施栽培中番茄、菜豆、芹菜、大葱与甜瓜轮作,对甜瓜的产量及根区土壤酶活性的影响。结果表明:在甜瓜前茬种植芹菜时土壤脲酶活性显著高于其它处理(P0.05);在芹菜与其它蔬菜轮作后种甜瓜的处理中,甜瓜根区土壤脱氢酶活性显著高于其它处理(P0.05);在菜豆与芹菜轮作后种甜瓜的处理中,甜瓜根区土壤中性磷酸酶活性及甜瓜产量显著高于其它处理(P0.05)。因此说明与其它轮作方式相比,芹菜轮作对提高甜瓜产量和改善土壤环境有较好的作用。

In order to establish the reasonable muskmelon rotation system ,taking melon cultivar Chuntian 3 ,to-mato cultivar Dongnong 709 ,bean cultivar August Green ,celery cultivar Solid Celery and onion cultivar Chang-bai as test varieties ,ridge culture method(celery with bedding and sowing )was adopted in the greenhouse ,the effect of crop rotation on the yield and soil enzyme activities of the melon in the root zone was studied .The re-sults showed that soil urease activity and yield of muckmelon was significantly higher than other treatments on the crop cultivation of celery in front of the melon (P< 0 .05);soil dehydrogenase activity was significantly higher than other treatments in celery and other vegetables rotation(P<0 .05);soil neutral phosphatase activity was significantly higher than others (P<0 .05) .So that the celery crop rotation improve of melon production and soil environment had better effect than other .

以新鲜紫甘蓝和芹菜为原料，以市售浆水为菌种，采用常温发酵，优化最佳发酵工艺参数；添加白砂糖和稳定剂确定紫甘蓝芹菜浆水饮料最优配方。结果表明，发酵温度27℃，蔬菜添加量15%（紫甘蓝与芹菜质量比2∶1），发酵时间60 h，接种量20%；白砂糖添加量8%，蔗糖酯添加量0.10%，羧甲基纤维素钠添加量0.02%，感官评价最好。通过对DPPH·测定，表明紫甘蓝芹菜浆水饮料比传统普通甘蓝芹菜浆水饮料DPPH·清除率高2.53倍。

The fermentation process conditions are optimized for the purple cabbage-celery Jiangshui beverage,with fresh purple cabbage and celery as raw material and commercially available Jiangshui as strain. The formula for the beverage is optimized by the amount of sugar and stabilizers. The sensory evaluation will be excellent when the fermentation lasted for 60 hours at 27 ℃,vegetables dosage are 15%(purple cabbage∶celery=2∶1),inoculum size is 20%;sugar is 8%,sucrose ester dosage is 0.10%,sodium carboxymethylcellulose dosage is 0.02%. In addition,the ability of DPPH clearance of the purple cabbage-celery Jiangshui beverage is 2.53 times as large as traditional head-cabbage-celery beverage.

供试品种采用“春甜三号”甜瓜、东农709番茄、八月绿菜豆、实心芹芹菜、长白大葱，在温室中利用垄作栽培方式，研究番茄、菜豆、芹菜、大葱与甜瓜的不同轮作，对甜瓜主要病害的影响。结果表明，大葱和菜豆与甜瓜轮作显著降低了甜瓜霜霉病的发病率（P〈0.05）；大葱和菜豆以及菜豆和芹菜与甜瓜轮作显著降低了甜瓜细菌性叶斑病的发病率（P〈0.05）；菜豆和芹菜与甜瓜轮作显著降低了甜瓜白粉病的发病率（P〈0.05）。综上所述，菜豆和芹菜与甜瓜轮作对甜瓜主要病害有显著的抑制作用。

The melon cultivar "Chuntian 3",the tomato cultivar "Dongnong 709",the bean cultivar "August Green",the celery cultivar "Solid Celery" and the onion cultivar " Changbai " were used as materials tak-ing ridge planting in the greenhouse (celery using flat beds and sowing method).Tomatoes,beans,celery and onion are used to crop rotation cultivation in the greenhouse,in order that we compared the effect of the main of plant disease.Results show that the incidence of melons downy mildew is significantly reduced than other treatments on the crop rotation of onion and beans (P<0.05);the incidence of the melon bacte-rial leaf spot is significantly reduced than other treatments on the crop rotation of onion and beans and the crop rotation of beans and celery (P<0.05);the incidence of the melon powdery mildew is significant-ly reduced than other treatments on the crop rotation of beans and celery (P<0.05).To sum up the crop ro-tation of beans and celery has significant inhibitory effect on the m