farm water requirement

The population dynamic of brown planthopper (Nilaparvata lugens) in rice field of Chongqing;

重庆秀山褐飞虱田间种群动态及其应用

The variation of ratio of potassium to calcium in flue-cured tobacco green leaves during the field growth process;

烤烟田间生长过程中叶片钾与钙比值的变化

Researches of Grading Model of Field Sampling Cotton Based on Machine Vision Technology;

基于机器视觉技术的田间籽棉品级抽样分级模型研究

A Fighting Drummer Walking to the World——International Spread and Influence of Tian Jian s Poems;

走向世界的战斗鼓手——田间诗歌在国际上的传播和影响

This article according to the tractor operations research theory to propose the tractor field work fuel oil efficiency appraisal target,elaborated the tractor field work energy conservation contrast testing method,and obtained the confirmation in reality.

为此,根据拖拉机运用学的理论提出了拖拉机田间作业燃油经济性的评价指标,阐述了拖拉机田间作业节能对比的试验方法,并在实践中得以验证,旨在为评价拖拉机田间作业的燃油经济性提供依据。

The results of field trial showed that acephate 30% EC had excellent effects to control Lipaphis erysimi Kaltenbach.

田间试验结果表明,30%乙酰甲胺磷乳油对萝卜蚜具有理想的防治效果,表现出良好的速效性和持效性,使用30%乙酰甲胺磷乳油65～135mL/667m2,在蚜虫发生期内喷雾防治,施药第1d,防治效果就超过90%,药后第10d仍保持在90%以上,且对油菜安全。

The formula and process of the fertilizer are described;the field trial and economy are presented.

用除草剂36%(苯噻+苄)与氯化铵制成水稻除草返青药肥,介绍该药肥配方、挤压造粒制造工艺、田间试验情况及经济效益,比肥料、除草剂分别施用增产8。

The Imidacloprid + Thiram + Carbendazim 27% FS for cotton seed treatment was reported, including its active ingredients selection, preparation method, main technical properties and field efficacy.

介绍了27%吡·福·多悬浮种衣剂有效成分配比的室内筛选、助剂配方研究、主要技术指标和田间药效等。

The article reviews advances in molecular biology of Spodoptera litura multicupsid nucleopolyhedroviru,the epizootic dynamics of Spodoptera litura nuclear polyhedrosis virus,the poison to non-target organisms,the factory turns the production and the field efficacy.

斜纹夜蛾核多角体病毒杀虫剂是一种新型的生物农药,从分子生物学、病毒流行学、对非靶标生物的毒性、工厂化生产及田间药效等方面阐述了斜纹夜蛾核多角体病毒的研究进展。

Through the further researches and experiments,this paper describes the study on interplanting Amomum villosum with technical measures of field management,etc.

在砂仁由北纬24°37′(长泰)北移到北纬26°34′(南平)获得引种成功的基础上,通过进一步研究试验,在杉木林地套种砂仁,采取田间管理等技术措施的研究,以求达到提高果实产量的目的。

Field management of the forage grasses at various developing stages, and the strategies for the increase of water use efficiency are also presented and discussed.

对不同发育阶段牧草的田间管理以及提高水分利用效率的途径进行了讨论。

The field tests demonstrated that control effects of the mixture fenpropathrin+abamectin 19% EC at the rate of 9.

田间试验表明 ,1 9%甲氰·阿维EC 9 5g (a 。

This article gives a brief introduction of field test in combine equipped with intelligent-controlled system of feeding quantity.

介绍装有喂入量智能监控系统的联合收割机进行田间试验的概况 ,阐明应用喂入量挤压力测试技术进行喂入量实时监测的适用性 ,以及应用模糊控制理论对联合收割机实施智能自适应控制的有益探讨。

The role of Plastic film covering technique for com cultivation in the cropping system of nothwestem Liaoning was studied qualitatively and quantitatively through the combination of field test and systematic analysis in Jianping county.

本项研究以建平县为基点，采用田间试验与系统分析相结合的方法，配合温饱工程的实施，对地膜覆盖栽培技术在辽西北地区耕作制度发展中的作用，从定性到定量进行了系统研究。