查询词典 stubble crop

In addition, aerodynamic roughness of stubble field increased with the increasing of stubble height, until the heights reached 15, 30, 15 cm for naked oats stubble, oilseed rape stubble and wheat stubble, respectively.

同类作物不同高度的留茬覆盖下，地表空气动力学粗糙度随留茬高度的增加而增大，在莜麦、油菜和小麦茬高度达到15、30和15 cm时显著增大，是3种留茬防风的有效高度。

The experiment use cucumber as materials, There were two stubble cultivation includingspring stubble and autumn stubble. Three temperature environmentwere setted upby opening back slope ,back wall and front ventilation mouth or cover of many layers ortemporary hightened temperature. Jinchun 3 was used in spring stubble and Jinyou 1 was used inautumn stubble. The experiment initially ascertained that different temperature conditions ingreenhouse influence on growth and yield of cucumber by studying different temperaturetreatments effect on atmosphere factors (air temperature, ground temperature and relativehumidity), growth, correlated physio-biochemical index and yield of cucumber, which couldprovide reasonable temperature parameters for greenhouse cucumber cultivation in our province.

本试验以黄瓜（Cucumis sativus.L）为材料，分为温室春秋两茬栽培，通过开启后坡、后墙、前侧通风口大小、多层覆盖、临时加温等手段，设置 A、B、C 三个温度环境，春茬选用品种为津春 3 号，秋茬为津优 1 号，通过研究不同温度管理方式对日光温室内气象因子(气温、地温和空气相对湿度)及黄瓜的生长、产量、相关理化指标、果实商品性、品质的影响，初步探明日光温室内不同温度管理对黄瓜生长及产量形成的影响，为我省日光温室黄瓜栽培环境控制提供合理的温度参数。

For the sparseness of oilseed rape stubble and thin stem of benne stubble, their wind-breaking effects were worse than wheat stubble and naked oats stubble.

高度相同时不同类型的留茬比较，莜麦和小麦茬下风速降低幅度较大，植株稀疏的油菜茬和秸秆较细的胡麻茬的防风效果较差。

Introduction Chapter I introduces the purpose and significance of the topic, as well as stubble pulverizer introduced at home and abroad in the current status and trends of development, The second chapter introduces the various types of stubble pulverizer and its characteristics, Chapter III has made for the future stubble pulverizer in the study design and the production of some of the envisaged applications, the fourth chapter is the overall design stubble pulverizer calculation, Chapter V of this meeting for some of the experience of curriculum design experience, the sixth chapter references.

第一章引言主要介绍了该题目的目的和意义以及介绍了根茬粉碎机在当前国内外发展的现状和趋势，第二章主要介绍了根茬粉碎机的各个类型和其特点，第三章主要提出了对于未来根茬粉碎机在研究设计以及生产应用中的一些设想，第四章是根茬粉碎机的总体设计计算，第五章是对于进行本次课程设计的一些经验心得，第六章是参考文献。

The results indicated that OC in crop root and stubble was available for balance of soil OC in plough horizon, but was not enough generally as only mineral fertilizers were supplied. With no fertilizer, the biomass and the amount of OC of crop root and stubble both decreased year after year.

试验结果还表明，根茬有饥碳对维持耕层土壤有机碳的平衡有相当大的贡献，但在单施化肥时大多不足以补充矿化消牦；在不施肥时，根茬生物量和有机碳量均逐年下降。

To discuss the mechanism of controlling soil erosion by wind with standing crop stubble, combined the wind tunnel experiment with field experiment, the influence of soil erosion by wind on standing crop stubble under no-tillage practices was analyzed.

为了探讨直立作物残茬防治农田土壤风蚀发生的机理，该文利用风洞试验和野外观测相结合的方法，分析土壤免耕条件下直立作物残茬对农田土壤风蚀的影响。

The wind tunnel test results show that surface soil velocity and wind erosion modulus in the farmland under plow tillage are larger than that under no-tillage with standing crop stubble, while surface roughness under plow tillage is smaller than that under no-tillage with standing crop stubble.

风洞试验研究表明：翻耕土壤地表风速、土壤风蚀侵蚀率均比免耕土壤高，而地表粗糙度免耕明显高于翻耕。

The purpose of researching the fields of stubble is that corn stalks will be aimed at post-harvest stubble part, above ground and below-ground stubble of the main stem and crush evenly Hunban in the topsoil, To loose soil and increase soil organic matter, improve the physical properties of the soil, increase the aggregate structure function.

本课题研究的灭茬还田机，目的在于将玉米秸秆收获后的根茬部分、地面以上留茬及地面以下主茎部分粉碎并均匀地混拌在耕层中，达到疏松土壤、增加土壤有机质、改善土壤物理性质、增加团粒结构的功用。

Results showed that the CO2 absorb ability in the eight Crop systems net productivity process was 4 032 366ta^(-1); the amount of CO2 outlet in the soil was 3981753ta^(-1), less than the CO2 adsorb ability, so that the whole crop system was a weaker carbon sink process in the atmosphere. The continue planting species such as Rice, sugarcane, cassava, and melon crop or high haulm crops have the characteristics of annually crop net productivity CO2 absorb ability bigger than soil CO2 outlet and this systems had bigger carbon sink function ability; the short haulm crop systems of peanut, soybean, flowers, and vegetable annually crops net productivity CO2 absorb ability less than soil CO2 out let, but also carbon sink source. The CO2 absorb ability of fruits and economic parts above ground bigger than that which growth under ground. Except of the CO2 absorb ability less than the soil CO2 outlet in the peanut during growth in procreate period, the other seven crops CO2 absorb ability were bigger than that soil CO2 outlet during procreate period. Most of crops during growth in procreate period had carbon sink function ability, and only in barren period showed the carbon source function phenomenon.

结果表明：2005年广州市8种农作物系统作物净生产力吸收CO2 4032366ta^(-1)，其土壤CO2排放3981753ta^(-1)，吸收大于排放，对大气CO2而言，整个农作物系统是一个弱的碳汇；水稻、甘蔗、木薯和果用瓜4种连作或高杆作物系统每年作物净生产力吸收CO2量大于土壤CO2的排放量，系统具有较大的碳汇功能，花生、大豆、花卉和蔬菜4种矮杆作物系统每年作物净生产力吸收CO2量小于土壤CO2的排放量，系统起着碳源作用；果实或经济产量生长在地上部分的作物其单位面积吸收CO2能力比果实生长在地下的作物大；除花生在生育期间生物量吸收CO2量少于同期土壤排放以外，其余7种作物在生育期间生物量吸收CO2的量大于同期土壤排放，大多数农作物在生育期间具有碳汇功能，在撂荒期才体现碳源作用。

The planting structure has been converted from the duality of "food crop-economics crop" to the triplicity of "food crop-economics crop-forage crop".

利用实地调查，文献分析的研究方法，分析西藏一江两河地区种植业结构和畜牧业结构。

I will not give up and will not call you any more at the same time.

我不会放弃，同时我也不会在给你打电话了。

China is an uneven distribution of resources cross country.

摘要我国是一个资源分布不平横的国家。