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crops planting
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  作物种植
     Crops Planting Structure Adjustment Plan for the Edge of Desert District in the East of the Hexi Corridor
     河西走廊东部沿沙漠地区作物种植结构调整方案
短句来源
     Study on the Crops Planting Patterns of State-run Farms in Hubei Province
     湖北国有农场作物种植模式研究
短句来源
     (3)Comparing the amounts of wind erosion by different of crops planting,the drill crop is less than hill-drop crop.
     (3)不同作物种植条件下,条播作物农田风蚀量小于穴播作物。
短句来源
     The adjustment of crops planting structure with water restriction is a complicated systemic project not only considering the spatio-temporal distribution rule of water, water-demanding and water-short, but also the characters of demand of market and society. The targets of economy, society and ecology must be considered as a whole when people plan the optimized crops planting structure.
     水资源约束条件下的作物种植结构调整是个复杂的系统工程,不仅要考虑水资源的时空分布规律和作物本身需水、缺水规律,还必须结合市场和社会的需求特点,统筹经济、社会及生态三大目标,进行区域节水型种植结构的优化设计。
短句来源
     Secondly, it determines the reasonable agricultural production technology, planting patterns of crops and cultivation styles on the basis of the natural conditions of Daqing farm. At the same time, it chooses the models of the agricultural machinery system and works out its units by utilizing the method of dim scoring according to the technology demand of the crops planting and the technique conditions of the current machines.
     其次,根据农场的自然条件确定了合理的农业生产工艺,作物种植方式和耕作制度,并根据作物种植的农艺要求及农场现有机器的技术条件,运用模糊评分方法对农场的农业机器系统进行了选型研究,完成了机组的编制和动力机械和作业机械的功率匹配验算;
短句来源
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  作物种植条件
     (3)Comparing the amounts of wind erosion by different of crops planting,the drill crop is less than hill-drop crop.
     (3)不同作物种植条件下,条播作物农田风蚀量小于穴播作物。
短句来源
  农作物种植
     An optimization system of crops planting programming
     农作物种植规划优化系统
短句来源
     Vegetation and Crops Planting at Copper Ming Tailings Ponds
     铜矿尾矿库无土植被与有土覆盖农作物种植研究
短句来源
     Economic benefits is the most direct lever to adjust crops planting proportion and area, planting garlic and other vegetable is the rational choice as investigation household in existence condition;
     经济效益是调整农作物种植比例和面积最直接的杠杆,种植经济效益高的蔬菜是调查户在现有条件下的理性选择;
短句来源
     Secondly, considering the actual crops planting status in Beijing area, the multi-temporal NDVI curves of the main vegetations, including winter wheat, spring maize, clover, nursery, forest, were analyzed and extracted;
     其次,结合北京地区农作物种植的实际情况,提取并分析了北京春夏季主要植被地物(冬小麦、苜蓿、苗圃、春玉米、树林等)的NDVI时间谱特征;
短句来源
     Based on the shortage of water resources in the north of China, under the condition of definite crops planting scale, the limited water resources were allocated to different crops in deficit irrigation ways, which aims to get maximum benefit.
     针对北方水资源短缺的特点,在一定农作物种植比例条件下,将有限水资源分配给各种作物,进行非充分灌溉,使有效水资源发挥最大效益。
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  “crops planting”译为未确定词的双语例句
     The ratio of grain crops planting aera to total planting aera was 89.97% in 1949, and in 2002, the ratio was 62.57%,. The ratio of other crops area to total planting area was 1.19% in 1949, but in 2002 was 21.73%, mostly grain planting area was increased greatly.
     山东省粮食作物播种面积占总播种面积的比例由1949年的89.97%下降到2002年的62.57%,其他作物播种面积占总播种面积的比例则由1949年的1.19%上升到2002年的21.73%,主要是由于蔬菜面积的迅速增加而引起的。
短句来源
     Suggestions for the development of medicinal crops planting in Hunan Province and as well as its related main problems existing is explorated in the paper.
     本文对目前湖南药用植物栽培中存在的主要问题进行了分析,并就湖南药用植物种植业发展战略作了初步探讨。
短句来源
     regional comparative advantage in soybean crops planting;
     大豆生产的地区比较优势;
短句来源
     Pot experiment showed that after 30 days of transgenic Bt rice planting and by the end of the growth season of transgenic Bt cotton,the contents of soil total C,total N,alkali-hydrolyzable N,and available P and S had no significant difference with the control,which suggested that there was a little disturbance in the cycle and balance of soil nutrients after a short period of transgenic Bt crops planting.
     转Bt基因棉花和水稻的盆栽种植试验结果表明,与非转Bt基因原始对照相比,转Bt基因水稻短期种植30d和转Bt基因棉花种植一个生长季后土壤中全碳和全氮以及碱解氮、速效磷、有效硫含量与对照均无显著差异,表明转Bt基因作物的种植短期内对土壤主要营养元素循环和平衡的扰动是微小的.
短句来源
     In view of points above, a new method, more scientific and economic than before, is put forward, that is to estimate crops planting area by means of AVHRR mixed pixel neural network decomposition model, which comprehensively makes use of the advantages of both TM data and NOAA data .
     该文在前人研究的基础上提出了一种新的方法──应用AVHRR混合像元神经网络分解模型估算种植面积。 这种方法综合利用了TM数据与NOAA数据各自的优势,具有较好的科学性和经济可行性。
短句来源
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In order to change the all year round water-logged single rice crop planting system to the rice and winter upland crop rotation system for the rice paddy soils in the Lishaho region of northern Kiangsu, it is necessary to make open ditches for good drainage, to use phosphatic fertilizers or straw ash for the first winter crop, and better to grow a winter green manure crop in the first autumn.

1.沤改旱在田间工程上的要求是深沟狭畦,改善土壤水分条件。畦宽6至7尺,一般沟深1尺,腰沟和边沟深1.2尺。2.新沤改旱田一定要施用灰肥或磷肥。磷肥用量与土壤肥力状况和播种方法有密切关系。每亩用10斤过磷酸钙作种肥是在磷肥供应有限的情况下的一种经济有效的施用方法。开塘点播作为基肥施用时,肥力较高的鸭屎土每亩施用20斤过磷酸钙,肥力较低的小粉浆土每亩可施用30斤。磷肥以作种肥或基肥为宜,追肥效果不好。3.几种绿肥接种根瘤菌的效果不一样,黄花苜蓿和苕子接种根瘤菌的效果不显著,紫云英接种根瘤菌的效果极为显著,可以提高产量百分之二百至一千。它是新区发展紫云英的关键措施。4.里下河地区以早中稻茬为多,绿肥播种以9月中旬较为适宜,播种方法一般以板田开塘点播为宜,既可节省劳畜力,而且出苗亦较整齐。黄花苜蓿的泥浆泼浇法的效果与土壤水分条件有关,在干旱情况下,不及开塘点播的效果好。5.在冬干和春旱的情况下,灌溉是重要的增产措施。苗期灌一次水,可以保证全苗;越冬前再灌一次水,可以促进壮苗。如果再遇春旱,返青后仍需灌水一、二次。6.绿肥苗期每亩泼浇五担粪水提苗,可以起到以小肥调大肥的作用。

This paper deals with the control of European corn borers (Ostrinia nubilalis Hub.) by using trichogrammatid parasites (Trichogramma dendrolimi Matsumura and T.ostriniae Pang et Chen) in 1974 at Zhou County of Shantung Province.The aimsof this study were to ascertain the suitable time and frequency of parasite releases,the number of parasites released per unit area,and the effect of supplementary treatment with pathogenic microbes.Attention was also paid to the influences of the mode of crop planting,crop...

This paper deals with the control of European corn borers (Ostrinia nubilalis Hub.) by using trichogrammatid parasites (Trichogramma dendrolimi Matsumura and T.ostriniae Pang et Chen) in 1974 at Zhou County of Shantung Province.The aimsof this study were to ascertain the suitable time and frequency of parasite releases,the number of parasites released per unit area,and the effect of supplementary treatment with pathogenic microbes.Attention was also paid to the influences of the mode of crop planting,crop vigor,and the density of host eggs upon the effectiveness of the control.The results showed that the effectiveness in corn borer control was obvious,the percentages of parasitized host eggs in the treated fields generally amounted to 70-90%,and the rates of control reached to 60-80%.The suitable number of parasites released each time per mu was 10,000 which would bring forth a rate of parasitism about 80%.The time of release was important in influencing the rates of parasitism which ranged from 82.6% at the initiative stage of host oviposi-tion to 34.8% at the peak of ovipovsition.The effective frequency of parasite release was decided by the duration of host ovipositing activity and the time required to complete the development of the parasites at the prevailing field temperatures.For each host generation releases of three to four times would be enough.The growth status of the corn crop also contributed to the success of this control measure and the vigorous corn plants usually yielded the better results.After parasite releases the residual corn borers could be furhter eliminated by the application of Bacillus thuringiensis and Beauvcria bassiana if necessary.

本文系1974年在山东省邹县进行赤眼蜂防治玉米螟的研究结果。重点是摸索放蜂时间、次数、数量和蜂菌配合的防治效果,同时还探明了玉米的不同播种方式、长势及玉米螟落卵量的不同与放蜂效果的关系。研究结果表明:利用赤眼蜂防治玉米螟效果明显,卵寄生率一般可达70—90%,防治效果达60—80%。赤眼蜂每次放逢量一般以1万头为宜,寄生率可达80%左右,蜂量再多似无必要。放蜂时间要掌握在卵初期,防治效果可达82.6%,若在卵盛期放蜂,防治效果降低34.8%。放蜂的次数主要根据玉米螟全卵期的长短和赤眼蜂在当时的田间温度下发育一代所需时间而确定,一般放蜂3—4次即可。玉米的长势与赤眼蜂寄生率的关系极为密切,长势好的地块赤眼蜂的寄生率明显高于长势差的地块。以蜂灭卵,以菌扫残(幼虫),蜂菌配合可明显提高防治效果。

A linear programming model can be used to select the optimal planting proportion in multi-cropping systems for a production unit with the following constraints: total arable acreage, the needed amount of grain and edible oil,allocation of manpower, etc.According to the computations of a computer, it is most profitable to plant double crops 23.7% wheat/cotton, 15.2% rape/cotton, 58.9%, wheat/single rice,2.2% other, and doesn't plant double-crop rice in the brigade where was studied. During the...

A linear programming model can be used to select the optimal planting proportion in multi-cropping systems for a production unit with the following constraints: total arable acreage, the needed amount of grain and edible oil,allocation of manpower, etc.According to the computations of a computer, it is most profitable to plant double crops 23.7% wheat/cotton, 15.2% rape/cotton, 58.9%, wheat/single rice,2.2% other, and doesn't plant double-crop rice in the brigade where was studied. During the busy season, the brigade is to have at least 600 standard workersAlthough this model is intended for the production brigade, it can also be used in our country today by rural crop planting farmers, state farms, and county-level planners to select planting proportions in multi-cropping systems.

本文是以南方水田地区一个典型生产大队为研究对象,应用线性规划法,通过电子计算机计算,解出这个大队的各种熟制最优种植比例。所提出的数学模型,适用于各类农业生产单位选择各种熟制种植比例,也适用于县一级规划各种熟制种植比例。

 
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