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1.
As an old industrial base, Northeast China is one of the most important grain production base. To rejuvenate Northeast China, it is necessary to strengthen farming products processing, lengthen industrial chain and develop sustainable agriculture.  相似文献   

2.
Basal level of Animal Production is maintained with regulation of endoerine to concert genetic potential and environmental conditions.This balance can be moved to dramatical imporvements in rate and efficiency of production as well as composition of the products by biotechnological meth-ods.,In this paper,several novel achievements in the last decade are briefly reviewed for refference to further research and application of biotedchnology in animal production.  相似文献   

3.
Effects of four coating formulations on rnaive production were studied. The results showed that all ooating formulations had some effects on improving maize seedlings, strengthening the resistance againt diseases and pests and increasing the yidds in different degrees, especially Paxil which increased the corn yield by 12.0%, significantly higher than the eontrol.  相似文献   

4.
确保粮食安全是当前和今后一个时期内农村经济工作中的重要任务之一。农业资源不足、生态环境恶化、农民生产积极性不高、农业科技体系建设滞后等问题是制约粮食生产发展的主要因素。加速科技创新、加快成果转化、建立稳定的生产基地和大力发展牧草产业是提高陕西粮食生产能力的主要科技对策。  相似文献   

5.
This paper used the modern evaluation method of DEA(Data Envelopment Analysis) to assess the comparative efficiency and then on the basis of this among multiple schemes chose the optimal scheme of agricultural production structure adjustment. Based on the results of DEA model, we dissected scale advantages of each discretionary scheme or plan. We examined scale advantages of each discretionary scheme, tested profoundly a definitive purpose behind not-DEA efficient, which elucidated the system and methodology to enhance these discretionary plans. At the end, another method had been proposed to rank and select the optimal scheme. The research was important to guide the practice if the modification of agricultural production industrial structure was carried on.  相似文献   

6.
本文主要介绍了具有南方稻作技术特色的再生稻。文章首先简要回顾了我国西南生态区再生稻研究进展;其次,详细阐述了再生稻生产技术的关键措施;最后,根据近年来的生产实践,描述了再生稻生产技术的应用效果。本文的目的是希望在世界水稻主产区,特别是光热资源富余的地区,促进再生稻生产技术的研究和推广。  相似文献   

7.
8.
China’s food security mainly depends on the core areas of food production.Under the dual constraints of resource scarcity and environmental degradation,improving the grain production efficiency of the main grain-producing areas has become the fundamental way to strengthen the grain production capacity and improve the national food security capability,and to improve the efficiency of grain production in major grain-producing areas requires empirical support.This paper used the Super SBM model and...  相似文献   

9.
The production of atificial seeds by encapsulating microtubers of potato included a series of proccesses.Initially,the micropropagation of adventitions buds and microtuber-inducing system should be established.Both high quatity microtuber and synchronizing microtuber which have the same size were necessary for producing health potato artificial seeds.In our eperiment,the optimum medium of adventitious shoot-inducing of potato Hutao,Kesi,and Favorita is DCR 1.0mg/kg MA 0.5mg/kg IBA 500mg/kg LH;the optium medium of microtuber-inducing of Hutao and Kesi is DCR 5.0mg/kg MA 200mg/kg Lh _8% sugar.and the optium medium of microtuber-inducing of Favorita is DCR 5.0 mg/kg BA 0.1mg/kg NAA 200 mg/kg LH 8% sugar,Microtubers of the same size were gained by selecting the symchronous microtubers.2.0% sodium alginate was sued to encapsulate the microtubers of potato to form the artificialo seeds.and the concentration of Ca Cl2 is 4% .Phytohormone NAA promoted the germination of potato artificial seeds.these artificial seeds have more than 90% germinating frequency in plant hormone-free DCR medium.  相似文献   

10.
The growth of Pichia membranefaciens was studied using different nitrogen and carbon sources as substrates. Among nitrogen sources tested, soya peptone, yeast extract power, beef extract and polypeptone were relatively favorable to the growth of yeast. The density of the yeast showed to be directly proportional to carbon sources supplementation. Glucose and fructose were good carbon sources for the yeast growth. However, lactose showed poor performance for the cell growth of the yeast. In this study, beef extract presented a good synergic effect on the yeast growth with different carbonhydrates. The medium for P.membranefaciens used glucose and beef extract as substrates. The higher concentration of glucose and beef extract, the better growth of P.membranefaciens. The addition of chlorella growth factor (CGF) stimulated markedly the growth of P.membranefaciens. The increased concentration of CGF from 0.5 to 1% did not enhance the numbers of P.membranefaciens. This result will help design a better strategy for scale-up production of P.membranefaciens.  相似文献   

11.
Key technologies for green food pork production were described in this article,as aspects of business standardization ;production ectuipments and facilities,product quality control ;and pork production site establishment.  相似文献   

12.
This study investigated whether competitive reduction of pathogenic bacteria growth in pond water alleviates lipopolysaccharide (LPS) contamination and improves geese production performances in the “go...  相似文献   

13.
Over forty Trichoderma harzianum isolates have been screened in solid substrate fermentation (SSF) for chitinase production. Strains were isolated from Asian soil and tree bark samples. Identification was performed in Canada and Austria by classical and molecular taxonomical methods. Four SSF media were used for the screening. They contained wheat bran, crude chitin from crab shells (SIGMA) and different salt solutions for wetting of the substrate. In a five day fermentation at 30…  相似文献   

14.
On the basis of accomplishment obtained in the course of mechanized crop production owing to the progress of science and technology,the authors propose further in this paper the target and principles of technique asscmbly in agricultural production.A typical high yield model of technique assembly for soybean and wheat production is given as an example.  相似文献   

15.
Human milk fat (HMF) is the component that supplies the highest fraction of the infant's required dietary energy. Other sources of fat are necessary and crucial for infants while the breastfeeding is not possible, desirable or sufficient. There is enough scientific evidence that suggests the composition and distribution of the fatty acids affect the absorption of the fat in infants greatly, which influences the growth and health of infants. However, the composition and distribution of the fatty acids in cer...  相似文献   

16.
To produce high-affinity monoclonal antibodies against pesticide carbofuran, and the develop immunochemical assays for people's health and environmental protection, the hapten 4-[[(2,3-dihydro-2,2-dimethyl-7-benzofuranyloxy) carbonyl]- amino]-butanoic acid (BFNB) of carbofuran was synthesized and Balb/c mice were immunized by the hapten-carrier (BFNB-bovine serum albumin, BFNB-BSA) conjugates. The splenocytes of immunized mice were fused with Sp2/0 cells and the cultural supernatants of hybridoma cells were screened by the indirect enzyme-linked immunoabsorbent assay (ELISA), based on BFNB-ovoalbumin conjugates (BFNB-OVA). Purified monoclonal antibody (McAb) was obtained from fluids of ascites, deposited by octanoic acid and ammonium sulfate. The affinity and the specificity of McAb were characterized by ELISA or indirect competitive ELISA. A hybridoma cell line (5D3) secreting anti-carbofuran McAb had been established. The titer of culture medium and ascites was up to 1:2.048 × 10^3 and 1:1.024 × 10^6, respectively, and the subtype of the McAb was IgG1. The affinity constant of the McAb was about 2.54 × 10×9 L mol^-1, with an IC50 value of 1.18 ng mL^-1 and a detection limit of 0.01 ng mL^-1. Cross-reactivity studies showed that the McAb was quiet specific for carbofuran, as among the four analogous compounds, they were all hardly recognized (4.59 × 10^-4% for 2,3-dihydro-2,2- dimethyl-7-benzofuranol and less than 3.0 × 10^4% for others). The prepared McAb had a very high affinity and specificity, and it could be used to develop ELISA for rapid determination of carbofuran.  相似文献   

17.
Over forty Trichoderma harzianum isolates have been screened in solid substrate fermentation (SSF)for chitinase production. Strains were isolated from Asian soil and tree bark samples. Identification was performed in Canada and Austria by classical and molecular taxonomical methods.……  相似文献   

18.
By inducing frequency, intensity and duration of lower temperature in the middle and last ten-day periods in August in the rice-growing areas of southern China, increasing temperature for safe seed production was defined as 2℃. During the sensitive period of fertility, characters of panicle height and canopy structure of TGMS rice, Pei'ai64S, were measured. Results showed that temperature changes caused by irrigation in fields were below 40 cm of rice plant, and heating effect was significant at 20 cm when the temperature was increased by 3.1 ℃. For the present study, the following irrigation techniques were put forth: the water depth of 15-20 cm, current water used, irrigating after 17:00 and bailing at 10:00 in sunny or cloudy weather, irrigating on whole day, in shady or rainy weather, increasing inflows and outflows in large fields. In the present experiment, pollen fertility and self-fertilized seed setting rate accepted that the techniques were feasible and effective for against lower temperature and safeguarding seed production of two-line hybrid rice.  相似文献   

19.
Unbalanced agricultural production decision becomes the great block that influences the effective distribution of social resources, national grain security, social stability and economic development. T...  相似文献   

20.
The hapten, 3-{[1-(3-(methyl)phenyloxy)-carbonyl]amino}propanoic acid (HOM), mimicking the analyte metolcarb, was synthesized and verified by mass spectrometry (MS) and 1H-nuclear magnetic resonance spectrometry (1H-NMR). Then,HOM was conjugated with the carrier proteins bovine serum albumin (BSA) and ovalbumin (OVA) with stoichiometric amounts of N-hydroxysuccinimide/dicyclohexylcarbodimide (NHS/DCC) using the activated ester method. Polyclonal antibodies were raised against the conjugate of HOM-BSA in rabbits. Antiserum titres were determined by noncompetitive indirect ELISA procedures and the titer of pAb01 reached 1.28 × 106. The cross-reactivities of the structurally related Nmethylcarbamate insecticides were 0.0% except for dimethacarb. These results indicate that the antibody pAb01 with strong affinity and high specificity can be used to develop a sensitive and rapid detection protocol for metolcarb residue.  相似文献   

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