例句與造句

1. study on productivity and efficiency of six different multiple cropping systems
   不同復(fù)種方式的生產(chǎn)力和效益研究
2. wheat-maize interplanting of both crops'high yield features shorter cycling period, higher multiple cropping index, stronger fertility exhaustion and no time for soil fertility to recover
   小麥-玉米套種兩作產(chǎn)量皆高是以周期短、復(fù)種指數(shù)高、肥力耗竭強(qiáng)為特征，土壤肥力沒有時(shí)間得以復(fù)原。
3. in order to increase the fanner's economic benefit and sufficient use resource of field and sunlight in xinhe county of aksu area, the experiment was carried out on multiple cropping the processing tomato in intercropping system of fruit trees and winter wheat after harvest
   摘要為了充分利用地力，光熱資源和提高復(fù)播指數(shù)，增加種植農(nóng)戶的經(jīng)濟(jì)效益，在阿克蘇地區(qū)新和縣進(jìn)行了果樹行間冬麥?zhǔn)斋@后，復(fù)播加工番茄的試驗(yàn)，獲得成功。
4. the results indicate that ( 1 ) land production is on the basic development level, the restrictive factors of land production are the ratio of land production, product of crop, the area of medium and low production, multiple crop index
   研究結(jié)果表明：土地生產(chǎn)力處于基本可持續(xù)發(fā)展階段。土地生產(chǎn)率、公頃糧食產(chǎn)量、中低產(chǎn)田的面積、復(fù)種指數(shù)等對(duì)土地生產(chǎn)力的持續(xù)發(fā)展起限制作用；資源環(huán)境保護(hù)從初步可持續(xù)發(fā)展到基本可持續(xù)階段。
5. other factors that were found to have positive effects on soil nutrients include the multiple cropping index and the practice of plowing stalks back into the land . these findings lead to several policy recommendations . first, it shows that economic variables are very important in determining changes in soil fertility, and therefore the theory and method of economics should be taken seriously by soil scientists
   然后，根據(jù)理論預(yù)期以及單因素分析結(jié)果，我們建立了土壤肥力變化的社會(huì)經(jīng)濟(jì)及政策影響因素模型，分別采取差分和固定效應(yīng)兩種具體模型形式，對(duì)各種可能的社會(huì)經(jīng)濟(jì)及政策因素對(duì)土壤肥力變化影響的方向和程度做了定量估計(jì)。
6. It's difficult to find multiple crop in a sentence. 用multiple crop造句挺難的
7. the no-tillage and culture focus more on creating better conditions for microbe decomposing the crop residue compared with no-tillage . there are four principle in it : 1 ) successive capillary water circulation; 2 ) successive no-tillage; 3 ) successive multiple crop rotation; and 4 ) successive " ridge and furrow culture " . by these devices taken, the soil accumulate more organic matter in shorter period compared with general no-tillage
   將秸稈混入土壤中分解，壟、溝搭配，保持土壤的浸潤(rùn)狀態(tài)和連續(xù)植被，不僅解決了覆蓋免耕制中有機(jī)質(zhì)分解、轉(zhuǎn)化慢的問題，而且使輸入土壤的有機(jī)質(zhì)分解、轉(zhuǎn)化更加迅速，所以在促進(jìn)土壤有機(jī)質(zhì)循環(huán)方面自然免耕制表現(xiàn)出明顯的優(yōu)越性，土壤有機(jī)質(zhì)遂表現(xiàn)為快速的增長(zhǎng)。
8. based on the cultivated land fertility, according to grain yield, the planting coverage, the ratio of the grain crops to industrial crops and multiple crop index, the cultivated land population carrying capacity in 2010 and 2030 at the different population increasing modes were attained by predicting and analysing the food produce and the cultivated land carrying capacity
   摘要以耕地地力為基礎(chǔ)，根據(jù)糧食單產(chǎn)、種植面積、糧經(jīng)比和復(fù)種指數(shù)對(duì)河南省糧食產(chǎn)量和耕地資源承載力進(jìn)行了預(yù)測(cè)和分析，得出不同人口增長(zhǎng)模式下的河南省2010年和2030年耕地資源人口承載力。