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In this thesis , the effects of acid materials on calcareous soil were studied by using laboratory soil trial and pot experiments trail. The text studied effects of acid materials on pH value in calcareous soil ; studied effects of phosphoric acid (H2SO4 as control) on pH value and micronutrient availability ; studied relation between P and available Fe, Zn in plant; studied effects of acid material on growth of acidophilic plant.

本文采用室内模拟试验和盆栽试验相结合的方法,研究了不同酸性物质对石灰性土壤的酸化效果;磷酸和硫酸对石灰性土壤pH值及微量元素有效性的影响;植物体内磷、有效铁、锌的关系;不同酸性基质对嗜酸植物生长的影响。

Flower shop in the market to go to a bowl of small potted plants to attract my attention and asked the owner, I realize that it Alocasia called it the shape of some of the legislation as the Goddess of Mercy Honglian, green leaves, tip purple circle with a little lace, I asked about price, not expensive, it would happy to buy a home.

在花鸟市场里逛来逛去,一盆小型盆栽吸引了我的眼球,问了店主,我才知道它叫观音莲,它的形状有些像观音菩萨所立的红莲,绿色的叶子,叶尖圈着一点紫色的花边,我问了一下价格,不是很贵,就欢天喜地地把它买回了家。

The effect of azotobacter fertilizer on living activity, soil fertility, yield, total nutrient and crop quantity is studied at the different level of using nitrogen .in the calciform soil by the rape potted plant biology analogue experiment, in order that the best scope of valid applying azotobacter fertilizer is determined. It can offer theoretic basis for searching ways of biology controlling to high yields and qualities, optimization directions for products of special compound fertilizer and valid using.

本文通过油菜盆栽生物模拟试验,研究了在不同施氮水平下,石灰性土壤上固氮菌肥料对土壤微生物活性,养分以及油菜的生物产量、全量养分和品质的影响,旨在确定固氮菌肥料有效应用的最佳土壤氮素范围,为探求油菜作物高产优质的生物调控途径及专性生物复合肥的优化配比提供理论依据。

The result of study showed:1 The effect of some inorganic urea inhibitor enzyme indicated boracic acid inhibits the activeness of urea enzyme in soil well, delayed the speed of urea hydrolysis in the soil and decreased the volatilization of ammonia , boracic acid,can be chosen as a inorganic urea enzyme inhibitor.2 The effect of some organic urea inhibitor enzyme showed that the dissociative Humic Acids of turfy soil and weathered coal inhibit the activeness of urea enzyme in soil well.

室内模拟试验,对几种缓释氮肥的释氮研究表明,和其它几种氮肥相比,PCF和PSF的控氮时间都较长。 6。盆栽试验表明,PCF的释氮效果比其它缓释氮肥的要好,且在油菜生育的各个时期,释氮都较充足,是适合油菜的良好缓释氮肥。

In order to simulate the soil waterlogging status, the calculation of capillary rise from the water table and the functions of hydraulic conductivity characteristics were incorporated.

采用盆栽小麦水分试验资料验证了日蒸散量的模拟值,利用湖北荆州农业气象试验站和江苏金坛农业气象试验站的土壤水分历史资料对建立的模型进行了综合测试和验证,结果表明:蒸散量、地下水位和 0~ 5 0cm土壤含水量的模拟值与实测值具有较好的一致性,模型能可靠地预测多雨和渍水地区麦田土壤水分的变化动态

But systematic research concerning continuous mono-cropping grafted cucumber obstacle isn't reported. This paper systematically studied the effect of continuous cropping soil on grafted cucumber in aspect of its growth, yield and edaphon in pot experiments. Further more, root exudates of squash and grafted cucumber were collected by solution cultivate and adsorption of XAD-4 resins, and bioassay of the root exudates was did with cucumber and squash as receptors, studied allelopathy of grafted cucumber and squash root exudates on cucumber and squash , physiobiochemistry as well as.

本项研究采用盆栽试验以不同连作年限的土壤为基质比较系统地研究了连作年限对嫁接黄瓜的生长、产量和土壤微生物的影响;采用水培和XAD-4树脂吸附法分别收集嫁接黄瓜和砧木南瓜的根系分泌物并以黄瓜、南瓜为受体进行生物活性测定,并对嫁接黄瓜及其砧木南瓜根系分泌物化感作用的生理机制进行了初步探索。

"Cyclamen:any of various plants of the genus Cyclamen, especially a Mediterranean species (C. persicum) widely cultivated as a houseplant, having decorative leaves and showy, variously colored flowers with reflexed petal s."

仙客来:一种仙客来属的植物,特别是地中海沿岸的品种,作为室内盆栽植物被广泛种植,长有装饰性的叶子,并开有艳丽的、有反折花瓣的各色花。

"Cyclamen:any of various plants of the genus Cyclamen, especially a Mediterranean species (C. persicum) widely cultivated as a houseplant, having decorative leaves and showy, variously colored flowers with reflexed petals."

仙客来:一种仙客来属的植物,特别是地中海沿岸的品种,作为室内盆栽植物被广泛种植,长有装饰性的叶子,并开有艳丽的、有反折花瓣的各色花。

A 3 factorial pot experiment, with 2 phosphorus levels, 3 soil water contents and 4 winter wheat cultivars was designed to compare the P efficiency, P uptake efficiency and P use efficiency of different cultivars at Olsen P 3 2 mg·kg 1 of soil, and as influenced by soil water content.

选用在土壤磷水平为 5~ 7mg P.kg- 1土的条件下筛选出来的不同磷效率的 4个冬小麦品种,采用盆栽试验研究了有效磷为 3.2 m g P.kg- 1土时的磷效率、磷吸收效率、磷利用效率及土壤水分对这些指标的影响。

Eighteen samples of paddy soils developed on red earth,alluvial and lacustrine de-posits and Hsiasu loam(a heavily leached loess deposit )were collected from Kwantung,Kwansi,Kiangsi and Kiangsu provinces.

应用同位素P~(32)示踪法进行的水稻盆栽试验表明:在水稻不同生育期,土壤有效磷量&A&值与水稻土中非闭蓄态的磷酸铁化合物具有极显著的相关性(成熟期的r=0.95)。

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