A new weed, Spermacoce latifolia Aubl. was found in cane field of Lincang area in Yunnan province in recent years. It is knows that the weed originally distributed in the tropic area of South America, and has invaded into the South part of Guangdong and Fujian provinces, Hainan province, Hongkong and Taiwang areas, and Wenlin area of Zhejiang Province.

近年來少妇激情一区二区免费视频，臨滄市部分蔗地發(fā)現(xiàn)一種新雜草欧美自拍另类综激情亚洲，經(jīng)實(shí)地調(diào)查和查閱相關(guān)資料，結(jié)果表明該物種是原產(chǎn)于南美洲熱帶地區(qū)一级性生活久久无码，現(xiàn)已入侵廣東南部97资源共享夫妻福利视频、海南、香港国产精品欧美久久让激情、臺灣国产午夜免费A片完整版视频网站、福建南部和浙江溫嶺一帶的茜草科新歸化種闊葉豐花草Spermacocelatifolia Aubl。

Grandfather planted flowers, while I also planted flowers. When grandfather pulled up weed, I also pulled up weed. When grandfather grew Chinese cabbage, I followed him covering the colza with soil.

當(dāng)祖父下種黄片短视频久久，種小白菜的時(shí)候伊人影院在线操在线干影院，我就跟在后邊，把那下了種的土窩18禁啪啪啪网站，用腳一個(gè)一個(gè)地溜平caopo超碰地址发布页用户登录，哪里會溜得準(zhǔn)国产理论A片在线观看片，東一腳的，西一腳的瞎鬧成人免费黄网站。

The dodder is one kind of annual autoecious weed of alfalfa, cosmopolitan weed quar ine object.

菟絲子是苜蓿田中最常見的一年生寄生性惡性雜草欧美成人人免费HD视频，是世界性的雜草檢疫對象。

Although we have achieved great progress in the general control of the weed, there are also some serious problems in the harms of the weed, succession, drug-fast and the pollution of the herbicide.

農(nóng)田雜草與農(nóng)作物間進(jìn)行著劇烈的競爭影音先锋天堂最新少妇av，表現(xiàn)在很多雜草根深葉茂囯产一级A片久久久免费，特別是旱區(qū)雜草根部深扎土中，對水分的吸收常大于作物国产精品视频在观看视频。

Eupatorium odoratum is a poisonous, aggressive quarantine weed. It is widely distributed in warm and humid tropical regions including Southern America, Asia, Africa, Australia and other countries, which has now become a serious weed in south China.

飛機(jī)草Eupatorium odoratum是一種有毒日韩性爱不卡无码av、侵占性極強(qiáng)的檢疫性雜草，廣泛分布于南美洲手机可以免费在线看av的网站、亞洲国内精品黄色视频、非洲、澳洲30多個(gè)國家的熱帶地區(qū)超碰在线免费网站，目前已侵入我國南方各省并肆孽成災(zāi)AA成年人网站。

Mycorrhizal spores in most rhizospheric soil of weed species, except Vida cracca, TrfoHum npens and Oxalis cornculata, decreased significantly. 2 Influence of coexisting of various plant species on AMF colonization in Pb polluted soil Comparing with monoculture,the results showed mat diversity did not affect on die AMF colonization of weed plants planted in soil at the concentration (334.5251mg/kgsoil or nonpolluted soilsignificandy.In the experiment of species combination with Trfolium repens, Lolium perenne, Poa annua, Plan tago virginica, the infection rate of all species increased in Pb treatment except Poa annua, implying that diversified plant species coexistence may alleviate the impacts of Pb on mycorrhizal colonization.

鉛污染土壤條件下不同植物物種互作對菌根的影響通過盆栽加鉛模擬試驗(yàn)，在鉛污染(334.5251mg／kg土)的土壤中日本AA视频，黑麥草色九九在线视频精品9999、早熟禾、白車軸草和北美車前無論是對照還是鉛處理91麻豆精品福利在线观看，多植物物種共存組合中的雜草菌根侵染率與單個(gè)物種相差不大亚洲一级网站，AMF菌根侵染率的處理間差異的變化趨勢在鉛污染的土壤和對照土壤條件下表現(xiàn)一致，但鉛處理與對照相比国产免费av网站网址，除了早熟禾外国产操逼视频免费，菌根侵染率均升高，說明雜草多樣性對菌根有一定的保護(hù)作用中文字幕十二页。

It was concluded therefore that fertilization can be used to strengthen the competitive ability of perennial ryegrass and Trifolium repens with crofton weed, so crofton weed was restrained effectively.

因此可以建議深夜在线观看免费，在土壤肥力較差時(shí)，可以通過施肥等措施來加強(qiáng)黑麥草和白三葉的競爭力午夜性爱av在线，從而達(dá)到控制紫莖澤蘭的作用变态另类专区av无码。

To kill weed which may sprawl rampantly among crops in the first several years, effective weedicide is needed to play the same role as ploughing fields does to eliminate weed.

在最初的幾年里，雜草可能在農(nóng)作物之間繁茂地蔓生在线观看AA，為了消滅這些雜草欧美黄色网站的网址，需要有效的除草劑，發(fā)揮與耕地同樣的消滅雜草的作用色7788。

197 To kill weed which may sprawl rampantly among crops in the first several years,effective weedicide is needed to play the same role as ploughing fields does to eliminate weed.

分析：這是一個(gè)典型的將定語從句譯為前置的并列分句的例子黄色网站观。

To kill weed which may sprawl rampantly among crops in the first few ages, effective weedicide is commanded to play the alike role as ploughing fields does to eliminate weed.

在最初的幾年里，雜草可能在農(nóng)作物之間繁茂地蔓生，為了消滅這些雜草性爱AV大吊一线，需要有效的除草劑，發(fā)揮與耕地同樣的消滅雜草的作用欧美性爱一级视频C。