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桑果树优质苗木繁育技术
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作者 贾晓广 田慧平 万少侠 《果树资源学报》 2022年第3期50-52,共3页
桑果树是经济价值极高的经济林,在生产中发展前景广阔,为了培养桑果树优质苗木,对其春季繁育技术进行了总结:选择土壤肥力足、通透性好、含水量高、阳光照射条件强的地块作为苗圃地;选择15~30 a树龄,且生长健壮、无病虫害的母树作种子林... 桑果树是经济价值极高的经济林,在生产中发展前景广阔,为了培养桑果树优质苗木,对其春季繁育技术进行了总结:选择土壤肥力足、通透性好、含水量高、阳光照射条件强的地块作为苗圃地;选择15~30 a树龄,且生长健壮、无病虫害的母树作种子林;桑果树种子播种时期以2月下旬至3月上旬晴天多云的天气为好;做到浇水保湿、遮阴防晒,在幼苗期进行间苗,保证良好的肥水管理,清理除草,科学防治病虫害,减少苗木死亡,确保苗木质量,促进苗木健壮生长。在实际育苗中发现,采用春季播种技术培育的苗木产量高、苗木健壮,该技术当年春季播种,当年10月即可繁育出优质苗木出圃销售,见效快、效益高。 展开更多
关键词 桑果树 优质苗木 春季繁育 技术
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Chemical composition and antioxidant activity of certain Morus species 被引量:16
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作者 Mohammad IMRAN Hamayun KHAN +2 位作者 Mohibullah SHAH Rasool KHAN Faridullah KHAN 《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》 SCIE CAS CSCD 2010年第12期973-980,共8页
In the present work,the fruits of four Morus species,namely Morus alba (white mulberry),Morus nigra (black mulberry),Morus laevigata (large white fruit),and Morus laevigata (large black fruit),were analyzed for proxim... In the present work,the fruits of four Morus species,namely Morus alba (white mulberry),Morus nigra (black mulberry),Morus laevigata (large white fruit),and Morus laevigata (large black fruit),were analyzed for proximate composition,essential minerals,and antioxidant potentials.For this purpose,the ripe fruits were collected from the northern regions of Pakistan.The major nutritional components moisture,ash,lipids,proteins,fibres,carbohydrates,and total sugar) were found to be in the suitable range along with good computed energy.Total dry weight,pH,and titratable acidity (percent citric acid) were (17.60±1.94)–(21.97±2.34) mg/100 g,(3.20±0.07)–(4.78±0.15),and (0.84±0.40)%–(2.00±0.08)%,respectively.Low riboflavin (vitamin B2) and niacin (vitamin B3) contents were recorded in all the fruits,while ascorbic acid (vitamin C) was in the range from (15.20±1.25) to (17.03±1.71) mg/100 g fresh weight (FW).The mulberry fruits were rich with regard to the total phenol and alkaloid contents,having values of (880±7.20)–(1650±12.25) mg/100 g FW and (390±3.22)–(660±5.25) mg/100 g FW,respectively.Sufficient quantities of essential macro-(K,Ca,Mg,and Na) and micro-(Fe,Zn,and Ni) elements were found in all the fruits.K was the predominant element with concentration ranging from (1270±9.36) to (1731±11.50) mg/100 g,while Ca,Na,and Mg contents were (440±3.21)–(576±7.37),(260±3.86)–(280±3.50),and (240±3.51)–(360±4.20) mg/100 g,respectivly.The decreasing order of micro-minerals was Fe>Zn>Ni.The radical scavenging activity of methanolic extract of fruits was concentration-dependent and showed a correlation with total phenolic constituents of the respective fruits.Based on the results obtained,mulberry fruits were found to serve as a potential source of food diet and natural antioxidants. 展开更多
关键词 Mulberry fruits Chemical composition 2 2-diphenyl-l-picrylhydrazyl (DPPH) radical scavenging activity Nutritional value. Pakistan
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