英汉例句

• climatic assessment models for main cropping system of mountain areas in fujian were developed.

  福建山区耕地以水稻为主茬作物的熟制主要有双三熟制和单二熟制。

• the rational cropping system is propitious to solve the conflict between soil fertility and crop season, and can achieve high yield and low cost.

  合理耕作轮作，有利于解决地力矛盾和季节矛盾，实现高产、稳产、低成本。

• the results implied that cropping system and water status of previous cropping impacted n2o emission from paddy soil.

  轮作制度和前作水分状况极大地影响稻田n2o的排放。

• to separate cereal crop from forage crop and build a cropping system of cereal cash forage three units structure is an inevitable choice of solving grain problem in the loess plateau.

  粮料分流，建立种植业三元结构是解决黄土高原粮食问题的必然选择。因此，大力发展饲料粮生产是今后黄土高原种植业结构调整的必然方向。

• the main factors influencing the fluctuation of population include climate, food, cropping system and biotic factors, among which rice as a food plant and its cropping system play a more marked role.

  本文阐述了气候、食料、水稻栽培制度和生物等因素对三化螟种群数量变动的影响，并指出作为螟虫食料的水稻及其栽培制度的作用更为明显。

• multiple cropping system is a special characteristic of agriculture in china, which has crucial function on feeding 22% people of the whole word by 10% cultivate field of the whole world.

  中国农业能以占世界10%的耕地养活世界上22%的人口，多熟种植起着决定性的作用。

• also rape seed yield per area in the mix cropping system was the highest.

  间作与混作处理的油菜产量在可比面积上比油菜单作产量高，其中混作产量最高。

• the effect of applying n-fertilizer or not in wheat on soil fertility and grain yield and fertilizer-n use efficiency (fnue) of rice in the wheat-rice cropping system were studied.

  通过对前茬作物小麦设置施用氮肥与不施用氮肥处理研究它对土壤肥力及后茬作物水稻产量和氮肥利用率的影响。

• thus there should be studies for finding an optimal fertilizer schedule based on a cropping system including intercropping systems rather than for a single crop only.

  因此，应该研究包括间作在内的种植制度而不仅为某种作物寻找合适的施肥方案。

• effect of k application on the yield and potash balance of early and late rice at continuous rice-rice cropping system in dongting lake ecosystem was studied.

  研究了洞庭湖区稻—稻连作制中钾肥对早稻和晚稻产量及钾素平衡的影响。

• on the condition of winter wheat summer corn cropping system in beijing, the nonlinear goals programming model was used to optimize the water and nitrogen management under various rainfall year types.

  本文应用了非线性目标规划模型，用线性化逼近法求解，对冬小麦夏玉米种植制度下，不同降雨年型的水氮管理措施进行了优化。

• the authors put forward a method of cropping system spatial distribution optimization based on gis and gene algorithm.

  提出了一种以gis为平台，遗传算法为优化模型的县域种植制度空间布局优化方法。

• effect of long-term fallow and cultivation on soil fertility in rice-based cropping system .

  水旱轮作地区土壤长期休閑与耕种的肥力效应。

• the value of parthenocissus quinquefolia during grazing and its suitable ratio in the mixed feeding or cropping system still need be further studied.

  关于地锦的放牧利用价值，和其在混合饲草的最适比例尚有待进一步研究。

• the factors affecting soil fertility are: river harnessing, fertilizer application, and the changes in cropping system and land utilization after the adoption of high yield hybrid verities.

  影响肥力变化的因子包括河流治理、施肥、高产品种使用后种植制度和土地利用程度的变化等等。

• the others such as previous crops, sowing way for maize, cropping system and the climate were indirect factors, which affected the sowing date or amount of planthopper.

  前茬作物、播种方式、耕作制度和气候条件等都通过影响玉米的播期或灰飞虱的发生数量来间接影响当地或当年病害发生的轻重。

• a field experiment was conducted with rice plants to assess the effects of integrated fertilization on heavy metal balance in soil-rice cropping system and rice hygienic quality.

  通过田间试验研究了有机无机肥配施对土壤-水稻系统重金属平衡的影响。