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1)  occurrence regularity
发生规律
1.
Preliminary research of occurrence regularity of Apocheima cinerarius erschoff and the forecast of occurrence time;
春尺蠖发生规律及发生期测报初步研究
2.
Study of occurrence regularity and integrated management technology on hypogeous pest of medicinal plants;
药用植物地下害虫发生规律及综合防治技术研究
3.
Occurrence Regularity and Controlling Technique of Vegetable Grey Mound in Protected Ground;
保护地蔬菜灰霉病发生规律及防治技术研究
2)  occurrence [英][ə'kʌrəns]  [美][ə'kɝəns]
发生规律
1.
The occurrence and control techniques of Fentonia ocypete(Bremer) on chestnut fields in Southern Zhejiang province;
浙南板栗园栎粉舟蛾的发生规律及防治技术
2.
The occurrence of scarabs in Tonglu district and field efficacy of insecticides against the pest;
浙西北桐庐地区金龟子发生规律与田间药效试验
3.
The occurrence and forecasting technique of beet armyworm,Spodoptera exigua in the South of Zhejiang province;
浙南地区甜菜夜蛾发生规律与测报技术
3)  Occurrence law
发生规律
1.
Pathogen identification and occurrence law of ginger root-knot nematode disease;
生姜根结线虫病原鉴定及发生规律
2.
Study on the occurrence law of Colletotrichum of mango was carried out to find out the relationship between disease and conditions in mango orchard, it gives the integrated management in this paper.
通过对海南芒果炭疽病发生规律和病害与果园土质、气象因素、品种、肥料管理关系的研究,并进行了农药筛选试验,在此基础上提出了相应的综合防治措施。
3.
The occurrence law and control techniques of Pseudococcus maritimus(Ehrhom) in Moyu County,Xinjiang in 2004~2006 were studied and investigated.
2004~2006年,在新疆墨玉县对真葡萄粉蚧发生规律及防治技术进行了调查研究。
4)  occurrence rule
发生规律
1.
Occurrence Rules;
不同玉米品种黄斑病发生规律研究
2.
Study on occurrence rule and control of powdery mildew in Osmunda japonica;
薇菜白粉病的发生规律及防治技术研究
3.
The project studied the living habits, occurrence rule, natural population life table and carried out experiment of integrated control by investigation in fields.
通过对甘草胭脂蚧(Porphyrophora ningxiana)的田间调查,生活习性、发生规律、自然种群生命表以及综合防治试验研究,结果表明:该虫一年发生一代,成虫寿命7-10d,卵以卵袋的形式产于 2-6cm的土壤中。
5)  occurrence regulation
发生规律
1.
Research on occurrence regulation of diseases and insect pests in Houttuynia Cordata Thunb;
鱼腥草病虫害发生规律研究初报
2.
Preliminary study on predator species and their occurrence regulation of alfalfa insects;
宁夏苜蓿害虫天敌种类及其田间发生规律的初步研究
3.
Studies on occurrence regulation of kiwifruit chlorosis;
陕西猕猴桃黄化病发生规律研究
6)  occurrence laws
发生-规律
补充资料:栾树枣龟蜡介的发生规律与防治措施
    枣龟蜡介(CeroplastesjaponicusGr)属同翅目,蜡介科,又名日本蜡介、枣包甲蜡介、俗称枣虱子。在栾树上大面积发生时严重者全树枝叶上布满虫体,枝条上附着雌虫远看像下了雪一样,若虫在叶上吸食汁液,排泄物布满全树,造成了树势衰弱,也严重影响了绿化景观。通过两年的调查研究,摸清的该虫发生规律,找到了令人满意的防治方法。
    该虫一代一代,以受精雌成虫密集在一、二年生小枝上越冬,卵就产在雌虫下,每只雌虫可产卵1500至2000粒,越冬雌成虫3、4月间开始取食,4月中、下旬虫体迅速增大,5月中、下旬开始产卵,卵期长达25至30天,若虫6月下旬开始发生,初孵化的若虫多静伏在雌虫的介壳下,经数日后才分散外出,多爬到叶片的叶脉两侧危害,数日后即分泌蜡质,形成介壳,固定不动。雌虫发育成熟后再由叶片迁回枝上,并与雄虫交配,以后即在枝上固定越冬。雄性若虫8月上、中旬开始化蛹,蛹期15天左右,8月下旬、9月上旬羽化为成虫、雌、雄虫交尾后,雄虫即死亡,以雌虫越冬。
    在卵孵化期间,遇雨水多,空气湿度大,气温正常,卵的孵化率和幼虫成活率都很高,可达100%,当年为害重。反之,在此期间缺雨、气温高、干燥、大量卵和初孵若虫会干死在母壳下,当年危害就轻;雌成虫越冬期间,雨雪较多,枝条上结成冰凌情况下,自然死亡率就高。
    防治措施
    1.人工防治:从11月到第二年3月,可刮除越冬雌成虫,配合修剪,剪除虫枝。
    2.打冰棱消灭越冬雌成虫,严冬时节如遇雨雪天气,枝条上有较厚的冰凌时,及时敲打树枝震落冰凌,可将越冬虫随冰凌震落。
    3.若虫大发生期喷40%氧化乐果+40%水胺硫磷1000至1500倍,喷2至3次,间隔7至10天。
    4.呋喃丹灌根:用25%的可湿性粉剂200至300倍在5月份灌根2次,对杀死若虫效果很好。(来源:《中国花卉报》2004.02.05)
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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