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sequential cropping
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  复种
     The result showed, comparing with sole cropping, the land use efficiency of sequential cropping, row cropping, crop rotation raised by 62%, 38% and 21%.
     结果表明,与单作一熟农田相比,复种、间作及轮作农田土地利用效率分别提高62%、38%和21%;
短句来源
     【Conclusion】It was found that the land equivalent ratio of sequential cropping,intercropping,and crop rotation is 1.68,1.38 and 1.21.Compared with single cropping,the land use efficiency under different cropping patterns is increased by 68%,38% and 21%,respectively.
     结论复种套作、间混作及轮作的土地当量比分别为1.68、1.38和1.21,三种不同的种植方式土地利用效率较单作分别提高68%、38%和21%。
短句来源
     The information of crop dynamic under arable land extracting from time series of NDVI can represent the performance of sequential cropping.
     根据时间序列NDVI曲线的周期性提取的耕地农作物动态信息能够很好地揭示耕地的复种情况。
短句来源
     Study on Sequential Cropping Forage Crops after Wheat in the Plain of the West-Liao River in Inner Mongolia
     内蒙古西辽河平原麦后复种饲料作物研究
短句来源
     Study on the heat potential of sequential cropping in solar greenhouse
     日光温室作物复种热量潜力的研究
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  连作
     japonicus by grubs is related to such factors as the number of sequential cropping years,the model of intercropping and the type of soil.
     麦冬受蛴螬的危害程度与麦冬连作年限、间套作模式和土壤类型等因素有关。
短句来源
     The results showed that in sandyloams soil of sequential cropping of peanut without applying fertilizer for several years,the content of quick-acting potassium reduced by 10% every year.
     结果表明,中等肥力砂壤土多年不施肥连作花生,土壤中的速效钾含量每年以近10%的量递减,速效磷含量以连作第3年减少最多,达52.99%。
短句来源
     The variation of nutrient in soil of sequential cropping peanut and the response of such soil to organic and chemical fertilizers were investigated through pot culture.
     采用盆栽试验,探讨了连作花生土壤养分的变化及对施用有机肥料和无机肥料的反应。
短句来源
     This article sums up varieties of root exudates, their quantities and function on the base of former research, especially, the relationship between root exudates and nutritional activation in rhizosphere, allelopathy, microbic N fixation of soil and sequential cropping.
     综合论述了根系分泌物的种类、数量; 特别是根系分泌物与根际养分的活化及吸收、异株克生的关系,以及与土壤固氮微生物及连作障碍的关系。
短句来源
     The experiments done in the past several years show that the seeding technology hasgood economic results,and it is suitable for the sequential cropping area,especiallyfor Henan Province.
     几年来的试验表明,这种播种技术经济效果显著,较适合于一年两熟连作地区,特别是我省更为适用。
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  “sequential cropping”译为未确定词的双语例句
     The unit area yield of sequential cropping, row cropping, crop rotation was 1.63, 1.29 and 1.16 times of sole cropping.
     单位面积产量分别为单作一熟农田的1.63、1.29 和1.16 倍;
短句来源
     Light utilisation rate and annual yield of wheat/corn/corn pattern averaged 1 3189% and 19435 05 kg·hm -2 over two years, increases of 10 13% and 17 02% respectively, compared to the winter wheat summer corn sequential cropping pattern.
     麦玉玉模式光能利用率两年平均为 1.3189% ,总产量两年平均为 19435 .0 5 kg· hm- 2 ,分别比冬小麦 -夏玉米两熟平作提高了 10 .13%、17.0 2 %。
短句来源
     The total yield of WCCCP with the strip width of 2. 7m reached 1258. 1 kg/667m2 , which enhanced 20. 19% more than that of wheat - corn sequential cropping pattern.
     2.7 m带宽的麦玉玉模式两年平均产量为1258.1kg/667 m~2,比麦玉一年两熟平作增产20.19%。
短句来源
     Application of Land Equivalent Ratio (LER) on Sequential Cropping
     土地当量比和复种指数的应用研究
短句来源
     PRELIMINARY ANALYSIS OF THE CLIMATIC CONDITIONS IN SEQUENTIAL CROPPING WITH EMPIRICAL FORMULA
     复种气候条件的经验公式分析初探
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  sequential cropping
A field experiment was conducted for 6 growing seasons on a Paleudult to assess the influence of P rate and frequency on crop yield and P fractions in a maize-cowpea sequential cropping system.
      
Phosphorus requirement of a maize-cowpea sequential cropping on a paleudult
      
In a trial on sequential cropping, the groundnut (Arachis hypogaea) showed a significantly higher N2 fixation and residual N effect on the succeeding rice crop than cowpeas, blackgram, mungbeans (V.
      
Sequential cropping affords an opportunity to use land and water resources effectively throughout the period that is favourable to growing crops.
      
In these areas sequential cropping involved growing two or more crops every 2 years.
      


There are several patterns of double cropping in wheat fields in North China,relay-intercroppingand sequential cropping are two main patterns.On the basis of field experiments and investigationsfor a five year(1973~1978)period,an effort is made to discuss the utilization of solar energy,cropeompetion and yield analysis involved in these systems.As compared with sequential cropping,relay-intercropping has been found to be more effective inthe utilization of growth season and the resources of radiation,heat,and...

There are several patterns of double cropping in wheat fields in North China,relay-intercroppingand sequential cropping are two main patterns.On the basis of field experiments and investigationsfor a five year(1973~1978)period,an effort is made to discuss the utilization of solar energy,cropeompetion and yield analysis involved in these systems.As compared with sequential cropping,relay-intercropping has been found to be more effective inthe utilization of growth season and the resources of radiation,heat,and water in June and July,the values of dry matter,LAI,LAI-D,CGR,and E increase markedly.Under this system winterwheat can be sown at an optimum time,allowing a favorable growth of wheat plant due to marginaldominance.Instead of early-maturing hybrids of corn which must be adopted in sequential cropping,later-maturing and high yielding ones can be used.Under complicated and changeable natural condi-tions,relay intercropping can make full use of favourable climatic factors for plant growth and avoidor resist the unfavourabte ones.All these advantages of relay-intercropping could result in higher andmore stable yield for the whole year.However,there occur a series of intraspecific and interspecificcompetitions and machanization of farming become more diffcult.Sequential cropping is suitable for machanization.Since the crops are cultivated at the same timethere will be no interspecific competition.A uniform plant growth leading to a optimum density willbe more easily achieved.But there are still conditions of radiation,heat,and water not fully utilizedin summer,and occasional natural disasters are not easily avoided.

套种可争取季节,提高光、热、水的利用率。在华北复杂多变的自然条件下,套种可以趋利避害,产量较稳。但由此也产生了一系列种内和种间竞争,例如边行优势与减少播种行的矛盾、群体与个体的矛盾、共生期作物之间的矛盾等。这就需要从作物搭配、田间结构和水肥管理等方面予以调整。麦后复播便于机械化,同时不存在两种作物共生,没有种间竞争,易做到匀苗密植,保证播种面积。但复播作物对六、七月份光、热、水不能充分利用,同时华北地区遇旱涝、低温、病害等自然灾害机率较大。种植方式,决定于多种因素,故应强调综合研究,因地制宜、合理搭配,还要使机械化与种植方式相互适应。

Mechanical grubbing and semi-precision seeding technology of summer corn isa kind of transitional seeding technology which changes from traditional seedingmethod into modern precision seeding technology.Four working operations——grubb-ing,ditching,seeding and covering——can be simultaneously completed.It possessesmany advantages,such as high operating velocity and efficiency,sparing seedsand labours etc.The seeding technology may not only satisfy the quanti-fying and locating requirement of agricultural technology...

Mechanical grubbing and semi-precision seeding technology of summer corn isa kind of transitional seeding technology which changes from traditional seedingmethod into modern precision seeding technology.Four working operations——grubb-ing,ditching,seeding and covering——can be simultaneously completed.It possessesmany advantages,such as high operating velocity and efficiency,sparing seedsand labours etc.The seeding technology may not only satisfy the quanti-fying and locating requirement of agricultural technology of semi—precision seedingin three-diamensional space,but also improve the moisture and temperature condi-tions of topsoil and the external conditions of all growth stages of summer corn.The experiments done in the past several years show that the seeding technology hasgood economic results,and it is suitable for the sequential cropping area,especiallyfor Henan Province.

夏玉米机械半精量灭茬播种是由传统播种方法向现代精密播种转交的一种过渡播种技术。它一次完成灭茬、开沟、播种、覆土四道工序,具有作业速度快、效率高、节省种子、节省劳动力等优点.同时,采用这种播种技术不仅可以从三维空间达到半精量定量定位的农艺要求,也可改善耕层土壤的水分状况、温度状况及整个生育阶段的外在条件。几年来的试验表明,这种播种技术经济效果显著,较适合于一年两熟连作地区,特别是我省更为适用。

Under the conditions of higher soil fertility and moisture in Guan- zhong Plain,the relay-intercropping productivity is much higher than that of the sequential cropping with its yields,productive value and productive energy increased by 10-15%.15% and 10% respectively. Strip patterns are the key link to the relay-intercropping.Some wide-strlp patterns may have no sequential cropping advantages but others have a few advantages.Results from Fuzzy Multi-factorial Eva- luation indicated that the relay-intercropping...

Under the conditions of higher soil fertility and moisture in Guan- zhong Plain,the relay-intercropping productivity is much higher than that of the sequential cropping with its yields,productive value and productive energy increased by 10-15%.15% and 10% respectively. Strip patterns are the key link to the relay-intercropping.Some wide-strlp patterns may have no sequential cropping advantages but others have a few advantages.Results from Fuzzy Multi-factorial Eva- luation indicated that the relay-intercropping of wheat and corn with the strip of 2.5 chi was better and the relay-intercropping of wheat/ corn/soybean with the strip of 3.5 chi was the best in the narrow strip patterns. This paper deals with marginal effect,actual sown areas and width of empty bands affecting the yields of wheat.Also,this paper discusses the sensibility of corn responding to strip patterns and com- petition for light with soybeans in the relay-intercropping system,etc.

在陕西关中平原较高水肥条件下,间作套种的产量、产值和产能分别比单作复种增加10—15%、14%和10%。间作套种,带型是关键。宽带型中有的无间套优势,有的优势甚小。模糊综合评判表明,窄带型中,小麦玉米两茬套种,2.5尺带较佳,小麦玉米和大豆三茬问套,3.5尺带最优。本文还讨论了影响小麦产量的边际效应,实播面积和玉米对带型反应的敏感性,以及间作大豆的光竞争等问题。

 
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