摘要
我国亚热带地区有大面积的冬闲水田被闲置。利用这些土地资源在冬闲期栽培意大利黑麦草（ＩＲＧ），建立“黑麦草—水稻”草田轮作（ＩＲＲ）系统，可能是解决该地区青饲料紧缺问题的最有效的方法。为了探讨该系统的可行性，在深圳光明畜牧场集约栽培条件（翻耕条播，全期施氮３００ｋｇ／ｈｍ２）下进行了ＩＲＧ的栽培试验。供试品种樱早生（极早熟）、早生丰（早熟）、早生青叶（早熟）、普通种（中熟）和双春（晚熟）均是从日本引进。对照种为燕麦。试验结果表明，ＩＲＧ各品种的平均干物质产量达到１２８８０ｋｇ／ｈｍ２，比燕麦于物质产量提高了２６％，说明ＩＲＧ能够适应我国南亚热带水田冬闲期的气候条件。ＩＲＧ各品种在集约条件下的饲料营养性状十分引人注目，其粗蛋白质含量在两次刈割时分别高达２４．１０％～２６．９９％和１８．７６％～２３．９１％。由此可见，ＩＲＲ系统的黑麦草子系统在我国南亚热带地区不仅是可行的，而且具有高效优质的特点。
For the present,a large area of paddy field is lain fallowed in winter mostly in subtropics of SouthChina. Exploiting those winter fallowed paddy fiolds resources to plant Italian ryegrass(Lolium multiflorum lam)with rice(Oryza sativa L)in rotation(IRR)system may be the most effective solution agrononucallyfor making up the shortage of green forages right there. Our experiment was thus conducted to prove the fea-sibility of this IRR system. Five cultivars of Italian ryegrass introduced from Japan,namely,Sakurawase(ex-tremely early cuItivar),Waseyutaka(early cv.),Waseaoba(early cv.),common(median cv)and Putaharu(late cv.), were arranged in rotation with rice under intensive condition systematically in Shenzhen,Guangdong Province. In the winter fallowed paddy fields on trial,common oats were used as ct1eck,theplanting measure to be taken was drilling after tillage and 3 0 0 kg/hm2 nitrogenous fertilizer was applled.Our results indicated that the average yield of five ryegrass cultivare was l288 0kg/hm2(on DM basis),being higher than that of oats by 26%in comparison,It is evident that Italian ryegrass in rotation with riceis quite suitable to subtropical climate condition in South China especially ideal for winter fallowed paddy fi-elds after rice harvest.and under the same intensive cultivation condition.the nutritive value of all these 5Italian ryegrass cultivars,crude protein contents,in the main,were determined at 2 4.10%～26.99%and18.76%～23.91%during the first and second forage cutting dates respectively. The IRG in rotation withIRR system,hitherto,should be somewhat feasible and could achieve great success in higher productivity andalso better quality in forage production.
出处
《草业学报》
CSCD
1994年第4期20-26,共7页
Acta Prataculturae Sinica
基金
国家博士后科研基金
中山大学科研基金
关键词
意大利黑麦草
水稻
轮作
栽培
Italian ryegrass,rice cultivar crop rotation,intensive cultivation
