查询词典 terrace cropping

But signs of frothiness are also cropping up in odd places: garlic has become an unlikely target for Chinese speculators.

但是，泡沫迹象突然发生在奇怪的行业：中国投资者不大可能作为投资目标的--大蒜行业。

In conclusion therefore, rotation with green manure is the best cropping system for improved soil biological activity.

作物长期连作后与绿肥作物轮作，有利于提高土壤生物活性，是一种较好的种植方式。

Ha, the irrigated farmland rate to the total arable land increased 5. 3 times and the total number of drilled wells raised 19. 6 times. At the same time, multi-cropping index increased by 33％. The percentages of winter wheat and maize sown area went up and those of millet, potato sown area which consume less water in their lifetime went down in the past 50 years. The gross grain yield increased 1923. 3× 10〓ton and the yield of per hectare increased 5082kg during the past 50 years.

在种植业内部，小麦、玉米播种面积在粮食作物中的比例不断提高，而耐旱的谷子、高粱、薯类等杂粮作物播种面积不断减少，形成典型的小麦、玉米两熟种植制度。50年内本区粮食产量增加了1923.3×10〓t，粮食单产提高了5082kg/hm〓。

Planting system of grain oil-bearing and fresh crop, planting index, per unit area yield, gross output, planting way and crop rotation system of the whole Tibet in different period, as well as the planting situations of agricultural districts of river valley such as Lhasa, Lhoka, Shikaze,etc. were analyzed. The main agricultural district of Tibet at present were summarized:(1) Crop composition and distribution is unreasonable;(2) The intensive cropping development is slow;(3) The planting mode is single.

通过分析全区不同时期种植指数，粮、经、饲作物结构，单产，总产，种植方式和轮作体制，以及拉萨、山南、日喀则等河谷农区的种植情况，概括和总结出目前西藏主要农区：(1)作物布局不尽合理；(2)多熟种植制的发展缓慢；(3)种植体制模式单一。

In order to investigate the effects of different sulphur fertilizers on rice and the recycling and balance of sulphur in rice-rice agro-ecosystem, seven treatments with different sulphur fertilizers were applied in a rice-rice cropping field with randomized block design, which included no sulphur, ammonium sulphate, single superphosphate, elemental S, gypsum, 50％ S from gypsum and 50％ from elemental sulphur (50％ GYP + 50％ ES), 70％ S from gypsum and 30％ from elemental sulphur (70％ GYP + 30％ ES).

为了了解不同硫肥对水稻的效应及在水稻栽培农业生态系统中硫的循环与平衡情况，采用随机区组设计，将不同来源的硫肥设为7个处理包括：对照，硫酸铵，过磷酸钙，自然硫素，石膏，50％石膏+50％自然硫素，70％石膏+30％自然硫素，对水稻进行处理。

I won't be discussing resampling, cropping, or Halicarnassus for several pages.

我不会用几页来讨论重复取样、图片裁切、或哈利卡那撒斯。

Results indicate that:(1) by using HANTS, the researchers could get the EVI/NDVI harmonic curves, the mean VIs and the amplitude of the harmonics which then were utilized in the identification of the cultivated land, and EVI appeared to be more precise, with the overall accuracies of 97.17% and 95.99% and Kappa coefficients of 0.7938 and 0.6518, respectively.(2) Multiple cropping index was extracted by counting the number of the curve's peak; and when the threshold of the peak value of the NDVI and EVI curves were set as 0.25 and 0.20, respectively, the fallow land could be well figured out.(3) From harmonic curves, some eigenvalues, such as time of the maximum growth rate, time of peak and the value of peak can be extracted, based on which the crop types can be primarily distinguished. And EVI still performed better than NDVI in this section.

结果显示：（1）利用傅立叶谐波变换得到的EVI和NDVI时间谱曲线的谐波余项及谐波振幅对耕地进行识别，从识别精度来看，EVI要优于NDVI，识别精度分别为97.17%和 95.99%，Kappa系数分别达到0.7938和0.6518；（2）通过计算时间序列曲线的波峰数能够提取耕地的复种指数，并且在EVI和NDVI曲线波峰阈值分别设为0.20和0.25时，休耕地能较为准确地被识别出来；（3）通过提取作物生长期内曲线的VI最大增长速率时间点以及峰值时间点等信息，作物种类能被初步识别，并且EVI较NDVI具有更强的识别能力。

Now, with the world economy in perhaps its worst pickle since the Depression, the names of Hawley and Smoot are cropping up again.

现在，世界经济正处于大萧条以来也许是最为困难的境地，霍利和斯姆特的名字又出现在人们嘴边。

Yet here it was, cropping up in his own honorific declaration.

现在它又出现在对他自己表示尊敬的宣言上。

By using the HYDRUS computer program, one dimensional water salt movement was simulated under diffirent well canal combined irrigation schemes with typical irrigation regime for cropping wheat in spring and corn in late summer.

针对灌区土壤地下水位高、地下水矿化度高、潜水排泄以蒸发为主等原因，研究了基本灌溉模式、井渠结合灌溉模式的改变对不同程度盐碱地改良的效果，提出适合银北灌区不同盐碱地的灌溉制度

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。