作物轮作

在一个作物轮作年内0-2m土壤水分基本达到平衡。

In a crop rotation year , the 0-2m soil moisture basically achieves balance .

滇池流域环境友好作物轮作模式的选择

Selection of Environmental Friendly Crop Rotation Pattern in Dianchi Catchment

作物轮作复种模式综合评价的AHP模型设计与应用

Application of the Analytic Hierarchy Process Model to Comprehensive Evaluation of Crop Rotational Systems with Multiple Cropping

另外一种IPM方法是作物轮作。

Another IPM method is rotating crops .

本文以土地当量比（LER）为指标，定量评价了轮作倒茬的综合生物学效果，并进一步分析了2～4年轮作周期下的高LER值作物轮作方式。

It was pointed out that the land equivalent ratio ( LER ) can be used as an index to evaluate the biological effects of crop rotation comprehensively . The 2 ~ 4 year crop rotation patterns with higher LER were estimated in the paper .

豆科作物轮作的培肥增产效果研究

Effect of raising fertility and crop yield by rotation of legume

我们必须建立有助于减少疾病的作物轮作制。

We must establish crop rotations which will help to minimize disease .

大田作物轮作效果定量评价研究

Studies on Effects of Quantitative Evaluation of Crop Rotation

主要研究结果如下：1.土壤条件、气候因素和十字花科作物轮作诱发油菜根肿病。

Soil conditions , climatic factors and crop rotation of Cruciferae crops induced rape clubroot .

制定作物轮作计划。

Develop a crop rotation plan .

苜蓿草地与苜蓿-作物轮作系统土壤微生物量与土壤轻组碳氮研究

Soil Microbial Biomass and Soil Light Fraction C and N Among Alfalfa Grassland , Alfalfa-Crop Rotation System

指出了建模思路和方法在作物轮作优化布局中同样适用，并建立了轮作布局优化模型。图3，参16。

The ideas and means in modeling were the same with the topological optimization in crop rotation pattern .

作物轮作方式产量效应模拟与优化选择研究

Yield effects simulation and optimum choices of crop rotation sequences of typical areas on Loess Plateau of China

土壤呼吸商苜蓿-作物轮作系统低于苜蓿草地和常规耕作农田。

Metabolic quotient was lower in the alfalfa-crop rotation systems than in 14-year-alfalfa grassland ( AS14 ) and CS .

作物轮作加施肥产生最高作物产量，并保持最高土壤氮和有机质水平。

Crop rotation plus fertilizer application produces the highest crop yields and maintains the highest soil N and organic matter levels .

不同作物轮作下石灰性紫色土磷素形态变化及其影响因素研究

Phosphorus Fraction and Variation Characteristics and Their Influencing Factors Analysis on Calcareous Purple Soil under the Rotation System of Different Crops

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 .

不施肥的作物轮作有助于维持土壤有机碳和氮水平，但不能维持高生产力水平。

Crop rotations without addition of fertilizers help maintain soil organic carbon and N levels , but do not maintain high productivity levels .

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 .

土壤微生物量碳和氮，以及它们占土壤有机碳和土壤全氮的比苜蓿-作物轮作系统高于常规耕作农田。

Microbial biomass C and N , as well as their ratios to the total in soils of the alfalfa-crop systems were higher than in conventional systems .

你知道吗？发明了花生数百种用途的乔治·华盛顿·卡弗在美国南方提出了作物轮作的概念。

Did you know ? George Washington Carver , who developed hundreds of uses for peanuts , introduced the concept of crop rotation in the American South .

结果表明，不同种类作物轮作后对小麦全蚀病的控制效果不同，以非禾本科蔬菜类作物轮作效果最佳；

Rotation periods and crops for rotation had been detected to control the take-all disease . The results showed that non-gramineous vegetables were the best rotation crops ;

绿肥作物轮作覆盖在免耕中的重要性&巴西和巴拉圭免耕发展经验

The Importance of Green Manure Cover Crops and Crop Rotation in the No-tillage System & Experiences in the development of the No-tillage System in Brazil and Paraguay

本文介绍了加拿大有机农业生产中防治杂草的各种措施，包括作物轮作、绿肥作物、可持续土壤管理、适度机械耕作等。

This article introduces many kind of weed controlling measures in Canadian organic agriculture , including well-designed crop rotation , green manures , sustainable soil management , and moderate use of mechanical cultivation .

目前，提高农作物氮素利用率的方法主要通过改进施肥方式及作物轮作等手段来实现，但并未从根本上解决作物氮素吸收率低下及大量施肥所带来的问题。

Nowadays , people improve the usage of nitrogen of plants mainly through changing fertilizing methods or crop rotation , which have not solved the problems of low nitrogen usage of plant and some related issues .

分析了大同盆地碱化盐土水盐动态规律，从施用石膏改良剂、施用农家肥和磷肥以及不同作物轮作三个方面进行了改良碱土效果的研究。

The study was conducted to analyse water and salt dynamic of alkalize solonchak and to define alkalize soil improving results of applying gypsum improving agent , farmyard manure and phosphorus fertilizer and rotation of different crops .

作物定位轮作体系长期试验研究（IV）&土壤优势真菌对大豆种子萌发的影响

Long-term crop rotation research ( IV ) & Effects of the soil dominant on the germinating of the soybean

将冬小麦&夏玉米→花生两年三熟制视为一系统整体，来研究3种不同作物在轮作周期内的土壤养分限制因子。

Winter wheat-summer maize-peanut was first regarded as a planting system to study soil nutrient restriction factors of the three crops during the rotation period .

半干旱区的新修梯田作物选择与轮作制度

Crop Choice and Rotation System for Newly Built Terraced Land in Semiarid Region