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- Therefore diseases and physiological barrier are the main factors of continuous cropping barrie of watermelon. 因此;生理障碍和病理障碍是构成西瓜连作障碍的主导因素.
- There were significant difference in growth characteristics and productivity in continuous cropping years. 不同连作年限土壤对黄瓜生长特性和产量均有极为显著的影响。
- Objective To discuss the internal and external factors' functional mechanism of ginseng continuous cropping obstacle. 目的探讨人参连作障碍的内外在因素作用机制。
- The decline in yields in the period from 1870 to 1900 was due to the rapid decline in fertility under continuous cropping. 休闲、开发更肥沃的地区及使用新品种又使产量增加。
- Results showed that continuous cropping bio-organic manure could improve the anti-adversity and disease resistant, prompt growth, and increase yield. 结果表明：施用“连作”生物有机肥能有效提高白术的抗逆和抗病能力，促进作物生长发育，提高产量。
- JIN Y,Yang Y H,Duan Y Q et al.Influence of continuous cropping on yield and quality of flue-cured tobacco[J].Tobacco Sci.Techn.,2002(1):41-45. [1]晋艳;杨宇虹;段玉琪;等.;烤烟连作对烟叶产量和质量的影响研究初报[J]
- The allelopathic effect of continuous cropping soil of Panax notoginseng was investigated and its mechanism was revealed initially. 摘要探讨三七连作土壤的化感作用，初步揭示三七连作土壤化感作用的机制。
- The soil urease activity and the number of ammonium oxidizing bacteria tend to increase by the continuous cropping years. 随着栽培年限的增加，土壤脲酶活性与氨氧化细菌数量有增大的趋势。
- The sclerotium disease was serious when the planting density of the vegetable was too greater and continuous cropping was made in the diseased field. 蔬菜栽植密度过大和病田连作地菌核病发病较重。
- The variation of rhizosphere and non-rhizosphere microbial population was analyzed in response to Rehmannia glutinosa continuous cropping problem. 摘要运用传统平板培养方法及变性梯度凝胶电泳(DGGE)分析法对地黄的连作问题进行了研究。
- More allelochemicals were found in continuous cropping soil than those in alternate cropping.Most allelochemicals in continuous and altern... 重迎茬土壤中的化感物质种类多与大豆根系分泌物、根茬腐解产物、地上部水浸物中的化感物质相同。
- The effects of undecomposable organic materials mixed with biopreparate on the physical and chemical properties of continuous cropping greenhouse soil were studied. 研究了有机物料配合生物菌剂施入塑料大棚连作土壤后,对土壤理化性质的影响。
- Analysis using plate count revealed a reduction trend in the number of culturable bacteria both in rhizosphere and bulk soil as Rehmannia glutinosa continuous cropping problem. 结果表明，地黄连作引起土壤根际、根外细菌数量减少；
- Ma Y H,Wei M,Wang X F.Variation of microflora and enzyme activity in continuous cropping cucumber soil in solar greenhouse[J].Chin.J.Appl.Ecol.,2004,15(6):1005-1008. [1]马云华;魏珉;王秀峰.;日光温室连作黄瓜根区微生物区系及酶活性的变化[J]
- It is efficient rotation system for overcoming continuous cropping obstacle to use rotation system of cucumber with corn for green manure, black-bean for green manure or planting cowpea. 并提出黄瓜与翻青玉米、豇豆、翻青黑豆轮作是有效预防和克服土壤连作障碍的较佳种植制度。
- Abstract : Replant diseases are one of the main limited factors in greenhouse vegetable production.The cause of continuous cropping and replant disease in greenhouse vegetable were analyzed. 摘要 ： 随着保护地蔬菜的发展，连作障碍已成为限制蔬菜生产的主要因子。
- Different crops have different reactions to continual crops. 不同作物连种后的反应不同。
- Rice is the chief crop in most southern provinces. 稻子是大多数南方省份的主要作物。
- The grain crop has gone down this year. 今年的粮食作物产量下降了。
- Because the continuous crops owe receiving,the agriculture village he runs have appeared the loss. 因为连续农作物欠收，他经营农庄出现了亏损。
