grass yield 中文意思是什麼
grass yield
解釋
牧草生產量-
Analyse on forage seeds production and grass yield in returning farmland to pastures in northeast yunnan
滇東北退耕還草中牧草種子生產及其產量分析 -
According to these maps, this artic analyses distribution correlation between grass yield soil elements
依據空間差異狀態分布圖，本論文定性分析了產草量與含水量等土壤因素的分佈相關性。 -
The correlation analyses were conducted for the rations between the vegetation indices and the sampled grass yield data which were taken as the grassland biomass quotas. the results indicated that there are quite high correlations between the vegetation indices and the grassland yield data. among them the rvi has the highest correlation coefficient, ndvi in the next, and then successively tvi, msavi, infrared index, savi, gvi, dvi and w vi, but bvi has the lowest correlation coefficient that there is a negative correlation coefficient between bvi and the biomass
對各種常用植被指數和草地生物量進行相關分析，由分析結果得出，比值植被指數（ rvi ）與草地生物量的相關性最高，相關系數達到0 . 885 ，其次為ndvi ，然後依次為tvi 、 msavi 、紅外指數、 savi 、 gvi 、 dvi和wvi ，而bvi與草地植被生物量呈負相關關系，且相關性最低，總的來說，遙感植被指數和草地生物量具有較好的相關關系，因而，利用植被指數來建立草地生物量監測模型是可行的。 -
Agronomic characteristics and nutritional compositions of six clover cultivars were studied, and the results showed that, in low altitude area in hunan province, canadian red clover took on higher drought - resistance, disease - resistance and insect - resistance, and which fresh grass yield was highest and protein content was higher
摘要為了篩選出在湖南省低海拔地區適應性較強的三葉草品種加以推廣應用， 2003 ~ 2005年採用隨機區組設計，對6個三葉草品種進行了農藝性狀觀察和營養成分測定。 -
Comparison on yield and quality of 5 grass family forage varities
5種禾本科牧草產量及營養品質比較 -
Based on multi - factor orthogonal designed field experiment, the ridge regression models of seed yield components and seed yield of the 6 grass species are founded through ridge regression analysis with big samples
摘要採用多區組多因素正交試驗設計，通過大樣本嶺回歸分析求出6種禾本科牧草種子產量因子與產量的嶺回歸模型。 -
The study also reveals the relationship between pasture ' s growth period, yield and their relation to weather factors and the evolvement characters of grassland vegetation under the background of drought climate, and refers to the main factors of the influence on grass - turn - green period as water condition in qinghai lake areas, and the main factors as the quantity of heat in the southern area of qinghai. because of the drought in the " three rivers source area ", the growing season is shortening and the production of the grass is decreasing clearly
揭示了牧草生育期、產量以及群體結構與氣象因子之間的關系和氣候乾旱化影響下草場植被的演變特徵，提出了影響環湖地區牧草返青期的主要因子是水分條件，影響青南地區牧草返青的主要因子是熱量條件， 「三江源」地區由於氣候乾旱化，導致牧草生長季呈縮短趨勢，牧草產量明顯下降。 -
Because the time was plentiful, the preserved planting of this pattern was basically about one - season melons and vegetables, the rotation of a grass used for mat in the fields with rice. it led to both cash income and more grain yield and many cases had realized a higher goal
一糧一經由於季節比較寬松，基本上是設施栽培一季瓜果蔬菜、香菇與水稻及露地栽培席草與水稻年內復種輪作，不僅效益高也兼顧了糧食生產，許多案例都實現了每667米2 「千斤糧，萬元錢」的目標。 -
The results showed that the soil moisture was moderate for the tree growth by plastic film mulching and covering grass under trees, which had led to higher yield and quality of the fruit than that of other treatments
因此，在黃河故道區無公害酥梨生產中，建議採取塑料薄膜覆蓋和樹盤覆草方法，此方法操作簡單，便於實施。 -
The results showed that the best water management pattern of fuji apple orchard was wheat straw mulching under low annual precipitation and grass planting under high annual precipitation. the comprehensive analysis was carried out on effects of different water management patters on yield of fuji apple, soil water conservation and soil organic matter of fuji apple orchard, growth in various stages and fruit quality of fuji apple under different annual precipitation
結果表明，在乾旱年份，紅富士蘋果園水分管理模式以秸稈覆蓋方式最佳，在多雨年份，紅富士蘋果園水分管理模式以果園種植白三葉草方式最佳；並綜合分析了不同降水年型不同水分管理模式對紅富士蘋果產量的影響，不同水分管理模式對果園土壤含水量和土壤有機質的影響及不同水分管理模式對紅富士蘋果生長狀況、外觀品質、內在品質的影響。 -
F ) to retreat cultivation 1. 467 million ha for reforestation or recovering grass. g ) attheend, to adjust the proportion of cultivated land, forest, grassland from 7 : 6 : 1 to 1 : 1. 4 : 1. 2, this proportion is reasonable ratio for land use structure. for getting the above strategy targets, we must handle of the following relations : a ) the relation between development and environment protection ; b ) the relation between population and land resources ; c ) the relation between construction and farmland protection ; d ) the relation between quality and quantity of farmland ; e ) the relation between land using and economy development ; f ) the relation between land exploitation and landscape worth maintaining, etc. for getting the above strategy targets, we must also adopt some good measures : a ) to control the construction occupying farmland ; b ) to use land intensive ; c ) to improve low - yield farmland ; d ) to make regional land resources distribution effective ; e ) to make comprehensive profit ; f ) to make family planning continually ; g ) to promote urbanization, etc. by carrying out these measures, land resources in shanxi province can be used sustainable
同時，論文對土地資源利用潛力和未來趨勢進行了科學推理，提出了山西土地資源永續利用的戰略目標：到2015年，全省耕地面積穩定在433 . 3萬公頃左右，基本農田面積保持在366 . 7萬公頃左右，保證糧食產量100億千克；各項建設用地控制在14 . 2萬公頃，其中佔用耕地在7 . 9萬公頃，土地開發、復墾、整理補充耕地10萬公頃，改造中低產田10萬公頃，治理水土流失面積1 . 13萬公頃，發展園林草地146 . 667萬公頃（含退耕還林還草99 . 2萬公頃、園地6 . 7萬公頃） ；經過長期努力，使林草地總面積達到865 . 6萬公頃，耕地、林地、草地比例由現在7 6 1逐步調節到1 1 . 4 1 . 2較合理的比例。 -
The annual yield of grass carp covers 20 % in total output of the fresh water fish, which is fast growing and tastes delicious, besides, the forages of grass carp are various, with a lower cost of raising, however, at present, the serious diseaes of grass carp results in a lower survival rate 10 - 15 %, which cause more then billions yuan economic losses per year to the fresh water cultiuation, especially, hemorrhagic virus of carp lasts for a long period of time and features a high death rate, therefore, it " s a woed - wide problem for the aquacultural scientific researchers to discover an effective settlement, which is still under the discussion
其生長快、飼料來源廣、飼養成本低和肉味鮮美。但草魚病害多，危害嚴重，目前草魚由苗種養至成魚的成活率僅為10 - 15 ，每年給我國淡水養殖業造成數億元經濟損失。特別是病毒性的草魚出血病，流行季節長，發病死亡率高，因此，對草魚出血病的有效防治一直是世界各國水產科學工作者艱苦探索而又未能找到理想解決辦法的世界性難題。
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