农作物轮作有助于防止水土流失。
农作物轮作技术已经介绍给农民们了。
The technique of rotating crops has been introduced to the farmers.
甘蔗和水稻，甘薯，豆类或黄麻等作物轮作，可以大大减轻受害。
Sugar cane and rice, sweet potatoes, beans or jute, crop rotation, can greatly reduce suffer.
评估大地理区域内作物轮作水平是农业生产中必须解决的重要问题之一。
How to evaluate crop rotation level in large geographic area is one of the most important problems in agricultural production.
结果表明，土壤轻组有机碳和氮含量苜蓿-作物轮作系统高于苜蓿草地。
The results showed that light fraction C and N pools of the alfalfa-crop rotation systems were higher than in alfalfa grassland.
她的研究结果表明，减少排放要比只是减少氮肥的使用和改变作物轮作周期复杂得多。
Her results show that reducing emissions is more complicated than just cutting back on nitrogen fertilizers and changing crop rotation cycles.
在人们普遍利用农作物轮作和土壤保持的作法前一个世纪，他就这样做了。
He practiced crop rotation and soil conservation a century before these became standard practice and he invented a plow superior to any other in existence.
在人们普遍利用农作物轮作和土壤保持的作法前一个世纪，他就这样做了。
He practiced crop rotation and soil conservation a century before these became standard practice, and he invented a plow superior to any other in existence.
此次田间试验的目的，是研究这一方法能在多大程度上防止由于精细的作物轮作所产生的土壤退化。
The aim of the field experiment was to investigate to what extent such a system could prevent soil degradation resulting from very intensive crop rotations.
但是他发现在他农田中搞所谓“湿地流转”的作物轮作可以增加土地氮含量并杀死引起疾病的细菌。
But he found out that working these so-called walking wetlands into his farm's regular crop rotation can increase levels of crop-boosting nitrogen and drown disease-causing bacteria.
他练习作物轮作、水土保持一个世纪之前，这些被成为标准的做法，他发明了一种犁优于其他任何存在。
He practiced crop rotation and soil conservation a century before these became standard practice, and he invented a plow superior to any other in existence.
他连续5年在同一块地上轮流种植不同作物，研究人员称之为轮作。
He grew a different crop on the same field five years in a row, what researchers call crop rotation.
《犁的纪念碑》形为一三角状地块，每边宽一英里，以轮作方式在每个边种植季节性作物，象征翻耕，播种，收割，翻耕的循环。
"Monument to the Plow" called for a triangular site a mile wide on each side to be planted with seasonal crops on rotation: ploughed, sown, harvested, ploughed, etc.
轮作的四种作物是玉米、大豆、小麦和苜蓿，四年内每年种植一种作物。
The four crops grown in rotation are corn, soybean, wheat, and alfalfa, with one crop grown each year during the 4-year cycle.
其次最常见的农作物，大豆，回报低，但轮作是必要的用以保证土壤能够拥有宽裕的玉米产量。
The second most common crop, soybeans, yields a lower return but crop rotation is necessary to keep the soil in shape for bounteous corn yields.
豌豆是甘肃中部干旱地区重要的轮作、粮食和饲料作物。
The pea is an important rotation food and a forage crop in the central arid region of Gansu.
轮作：在同一块土地上连续种植不同的作物以提高土壤肥力并帮助控制昆虫的生长和疾病的蔓延。
Crop rotation: the successive planting of different crops on the same land to improve soil fertility and help control insects and diseases.
水旱轮作是我国重要的作物种植系统，在确保作物稳产、高产和提高种植业经济效益方面具有重要的地位。
Paddy-upland rotation is a main crop cultivation systems and has an important position in ensuring crops stable yield, maintaining high yield and improving planting economic benefit in China.
在黄土丘陵区要求林草与农作物地在轮作周期内的总耗水量与有效雨量（降雨量与径流深之差）持平。
It is necessery that the total consumptive use of water in the rotation period is equal to the total effective precipitation(pre- cipitation minus runoff depth)in the loess hilly region.
保护性农业是一种作物生产手段，它基于三个原则：永久性土被，最低土壤干扰，以及轮作或作物关联。
This is an approach to crop production that is based on three principles: permanent soil cover, minimum soil disturbance, and crop rotations or crop associations.
轮作系统不但提高了作物产量，而且总初级生产力、光能利用率、辅助能利用率分别比连作系统高17.47%、9.87%和5.0%。
Moreover, the overall initiative productivity, light energy using rate and assistant energy using rate was increased by 17.47%, 9.87%, 5.0% respectively.
我们根据土粒的大小来分析土壤，而且，土粒的大小在很大程度上决定着土地的耕作方式、农作物的轮作和种植的作物的种类。
We analyse soils according to the size of the particles and the size of the particles determines to a great degree the different tillages crop rotation and different crops to be grown on the soil.
我们根据土粒的大小来分析土壤，而且，土粒的大小在很大程度上决定着土地的耕作方式，农作物的轮作和种植的作物的种类。
We analyse soils according to the size of the particles and the size of the particles determines to a great degree the different tillages crop rotation and different crops to be grown on the soil.
模型对冬小麦—夏玉米轮作体系作物叶面积指数、作物系数、根系生长与分布进行了模拟。
In the model, the leaf area index (LAI), crop coefficients, and root penetration and distribution were simulated for the winter wheat and summer corn double cropping system.
单一做法，可以将复种轮作系统的使用，边界，覆盖作物。
Monoculture practices can incorporate multiple cropping systems by using rotations, borders, and cover crops.
结果表明：施用秸秆钾与化肥钾，稻麦轮作制中两季作物总产量基本相当；
The results showed that the two harvest crops' yield of applied straw potassium was approximately equal to that of applied chemical potassium.
结果表明：施用秸秆钾与化肥钾，稻麦轮作制中两季作物总产量基本相当；
The results showed that the two harvest crops' yield of applied straw potassium was approximately equal to that of applied chemical potassium.
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