杂草科学
雜草科學
잡초과학
WEED SCIENCE
2014年
1期
54-56
,共3页
杂草稻%发生危害%防除
雜草稻%髮生危害%防除
잡초도%발생위해%방제
weedy rice%occurrence damage%control
为了探索萍乡市杂草稻的发生危害并及时进行防除,对历年的观察记录进行了分析,结果发现:从1970年萍乡市稻区的杂草稻被首次发现开始至20世纪90年代初,其发生每年都有加重趋势。将2011年采集的杂草稻与栽培稻种子分别埋藏在土层下15 cm,分别灌水30、40、50、60、70、80、100 d发现,杂草稻种子的萌发致死率分别是17.5%、32.6%、84.5%、96.5%、99.5%、100%、100%;栽培稻种子的萌发致死率分别是50.5%、61.2%、87.6%、100%、100%、100%、100%。将于萍乡市采集的同种杂草稻种子分别在萍乡市、三亚市栽种,结果表明:三亚市种植的杂草稻平均株高比萍乡市的高12.1 cm;三亚市种植的杂草稻种子为深黄色,比萍乡市的淡黄色更深;三亚市种植的杂草稻落谷率比萍乡市的高2.4%。分析研究结果,不同地方种植的杂草稻出现物理性状的差异可能与地理环境、气候因子及土壤肥力有关。
為瞭探索萍鄉市雜草稻的髮生危害併及時進行防除,對歷年的觀察記錄進行瞭分析,結果髮現:從1970年萍鄉市稻區的雜草稻被首次髮現開始至20世紀90年代初,其髮生每年都有加重趨勢。將2011年採集的雜草稻與栽培稻種子分彆埋藏在土層下15 cm,分彆灌水30、40、50、60、70、80、100 d髮現,雜草稻種子的萌髮緻死率分彆是17.5%、32.6%、84.5%、96.5%、99.5%、100%、100%;栽培稻種子的萌髮緻死率分彆是50.5%、61.2%、87.6%、100%、100%、100%、100%。將于萍鄉市採集的同種雜草稻種子分彆在萍鄉市、三亞市栽種,結果錶明:三亞市種植的雜草稻平均株高比萍鄉市的高12.1 cm;三亞市種植的雜草稻種子為深黃色,比萍鄉市的淡黃色更深;三亞市種植的雜草稻落穀率比萍鄉市的高2.4%。分析研究結果,不同地方種植的雜草稻齣現物理性狀的差異可能與地理環境、氣候因子及土壤肥力有關。
위료탐색평향시잡초도적발생위해병급시진행방제,대력년적관찰기록진행료분석,결과발현:종1970년평향시도구적잡초도피수차발현개시지20세기90년대초,기발생매년도유가중추세。장2011년채집적잡초도여재배도충자분별매장재토층하15 cm,분별관수30、40、50、60、70、80、100 d발현,잡초도충자적맹발치사솔분별시17.5%、32.6%、84.5%、96.5%、99.5%、100%、100%;재배도충자적맹발치사솔분별시50.5%、61.2%、87.6%、100%、100%、100%、100%。장우평향시채집적동충잡초도충자분별재평향시、삼아시재충,결과표명:삼아시충식적잡초도평균주고비평향시적고12.1 cm;삼아시충식적잡초도충자위심황색,비평향시적담황색경심;삼아시충식적잡초도락곡솔비평향시적고2.4%。분석연구결과,불동지방충식적잡초도출현물이성상적차이가능여지리배경、기후인자급토양비력유관。
To reveal the occurrence and infestation of weedy rice in Pingxiang City for its control ,we analysed historical observational records over several years .From the time weedy rice was initially discovered in Pingxiang City in 1970 to the early 1990s,its occurrence increased every year .Seeds of weedy and cultivated rice collected in 2011 were buried at soil depths of 15 cm,and after irrigating 30,40,50,60,70,80,100 days respectively,we found that buried seeds of weedy rice did not germinate in the rate of 18%,33%,84%,96%,100%,100%,100%respectively;and those of the cultivated rice were 50%,61%,88%,100%,100%,100%,100%respectively .Weedy rice collected in Pingxiang City were grown in Sanya City ,Hainan to comparatively study their characteristics .Average plant height of weedy rice grown in Sanya City was 12.1 cm higher than that in Pingxiang City;the color of weedy rice cultivated in Sanya was deep yellow ,which was darker than the faint yellow of rice cultivated in Pingxiang City;the shattering rate of weedy rice in Sanya City was 2.4%higher than that in Pingxiang City .Through analyzing of the results ,the reason for morphological differences of weedy rice planted in different cities may be related to the geographical environment ,climatic factors and soil fertility .