大蒜主要病害及其综合防治技术

大蒜病害主要由真菌和病毒引起。介绍了各种病害的病原、病症及发病条件。从栽培措施、生物防治措施、化学防治措施等方面介绍了大蒜病害的综合防治方法，指出了大蒜种植及病害防治中存在的误区。     

CIMMYT小麦在我国的产量和品质表现

为了研究近年来国际玉米小麦改良中心(CIMMYT)育成的小麦品种的产量、品质等性状及其在我国春麦区的表现，选用新引进的10个CIMMYT小麦新品种和我国15个主栽春小麦品种，在国内9个试点进行了两年联合多点试验。结果表明，CIMMYT小麦新品种对我国中西部地区适应性较好，在产量和品质方面总体表现较我国品种好，其中大多数品种具有优质高分子量谷蛋白亚基(HMW-GS)，沉淀值较高，对叶锈病抗性突出。今后在继续提高产量的同时，应把改良我国小麦的加工品质和抗病性作为重点，开展对CIMMYT小麦种质的直接和间接利用研究。     

巍山县核桃蚜虫天敌优势种研究

In order to clarify the occurrence of natural enemies of Juglans sigillata aphid, find scientific guidance for prediction and utilizing natural enemies to prevent and control of aphids, this study established a monitoring experimental area to study the population dynamics and the occurrence of natural enemies.The results showed that the peak period of aphid occurrence was from late May to early June, and there was only one peak period throughout the year. The main natural enemies were Harmonia axyridis, Coccinella septempunctata, Propylaea japonica (Thunberg), Episyrphus balteatus De Geer, Aphidius gifuensis Ashmead and Semachrysa. The Coccinellidae was the dominant natural enemy, and Harmonia axyridis was the dominant species with a dominance index of 0.494 7. The population of Harmonia axyridis had a close following effect with the population of aphids. The population number first increased with the number increase of aphids, and then decreased with the number decrease of aphids, which reached the peak later than the occurrence of aphids, and was consistent with the following effect of predator pests.