中国农业气象
中國農業氣象
중국농업기상
AGRICULTURAL METEOROLOGY
2010年
1期
69-73
,共5页
卿清涛%侯美亭%王明田%田宏
卿清濤%侯美亭%王明田%田宏
경청도%후미정%왕명전%전굉
若尔盖%草地早熟禾%生育期%气象条件
若爾蓋%草地早熟禾%生育期%氣象條件
약이개%초지조숙화%생육기%기상조건
Zoige%Kentucky Bluegrass%Growing period%Meteorological conditions
以四川省阿坝州若尔盖气象站1985-2006年的地面气象观测和牧草观测资料为基础,研究当地主要牧草--草地早熟禾(Poa pratensis L.)的生育期持续时间及其与水热条件的关系,分析了各生育期开始时间及与前期气象条件的关系.结果表明:若尔盖草地早熟禾整个生育期持续时间在125～176d,平均为144d,其中草地早熟禾营养生长期持续时间为79～111d,平均为92d,生殖生长期持续39～64d,平均为49d;草地早熟禾营养生长期、生殖生长期及整个生育期长短与≥0℃的积温呈负相关,与降水呈正相关,而积温是制约其生长季长短的主要因子;草地早熟禾返青期在3月26日-4月16日,展叶期在5月2日-16日,抽穗期在6月30日-7月16日;草地早熟禾返青期提前或推后与前期≥0℃积温的关系不明显,其余生育期开始时间与前期积温有一定关系,前期积温偏小,生育期有推后的趋势.
以四川省阿壩州若爾蓋氣象站1985-2006年的地麵氣象觀測和牧草觀測資料為基礎,研究噹地主要牧草--草地早熟禾(Poa pratensis L.)的生育期持續時間及其與水熱條件的關繫,分析瞭各生育期開始時間及與前期氣象條件的關繫.結果錶明:若爾蓋草地早熟禾整箇生育期持續時間在125～176d,平均為144d,其中草地早熟禾營養生長期持續時間為79～111d,平均為92d,生殖生長期持續39～64d,平均為49d;草地早熟禾營養生長期、生殖生長期及整箇生育期長短與≥0℃的積溫呈負相關,與降水呈正相關,而積溫是製約其生長季長短的主要因子;草地早熟禾返青期在3月26日-4月16日,展葉期在5月2日-16日,抽穗期在6月30日-7月16日;草地早熟禾返青期提前或推後與前期≥0℃積溫的關繫不明顯,其餘生育期開始時間與前期積溫有一定關繫,前期積溫偏小,生育期有推後的趨勢.
이사천성아패주약이개기상참1985-2006년적지면기상관측화목초관측자료위기출,연구당지주요목초--초지조숙화(Poa pratensis L.)적생육기지속시간급기여수열조건적관계,분석료각생육기개시시간급여전기기상조건적관계.결과표명:약이개초지조숙화정개생육기지속시간재125～176d,평균위144d,기중초지조숙화영양생장기지속시간위79～111d,평균위92d,생식생장기지속39～64d,평균위49d;초지조숙화영양생장기、생식생장기급정개생육기장단여≥0℃적적온정부상관,여강수정정상관,이적온시제약기생장계장단적주요인자;초지조숙화반청기재3월26일-4월16일,전협기재5월2일-16일,추수기재6월30일-7월16일;초지조숙화반청기제전혹추후여전기≥0℃적온적관계불명현,기여생육기개시시간여전기적온유일정관계,전기적온편소,생육기유추후적추세.
Based on the meteorological data and grazing grass data from 1985 to 2006 in the meteorological station in Zoige County, Sichuan Province, the relationship between the temperature and precipitation, and the growing period of Kentucky Bluegrass ( Poa pratensis L.) dominated in the Zoige grassland was analyzed. The starting time of all growing periods in relation to the meteorological conditions was also studied. The main results showed that the growing period of Kentucky Bluegrass ranged from 125 to 176 days, with the average by 144 days. However, the vegetative growing period which ranged from 79 to 111 days, on average by 92 days, was longer than the reproductive growth which was between 39 days and 64 days, on average by 49 days. The duration of vegetative growth, reproductive growth and the whole growing period was negatively related to accumulated temperature by 0℃, while it positively related to precipitation. The accumulated temperature was more important. The returning green stage of Kentucky Bluegrass was typically between March 26~(th) and April 16~(th) , the leaf-expansion period between May 2~(nd) and May 16~(th) , and the heading date between June 30~(th) and July 16~(th) . There was no significant correlation between the returning green stage of Kentucky Bluegrass and previous accumulated temperature by 0℃. The starting time of other growing periods had certain relations with previous accumulated temperature. The growing period was inclined to delay with lower previous accumulated temperature.
