· 本文主要介绍了Chive、Leek、Scallion、Shallot和Green onion（或Spring onion）这些常见的葱属植物的名称及其特征。Chive，也称小葱或香葱，常见于超市的塑料盒装活葱，上海菜市场 … Chive，Leek，Scallion，Shallot，Green onion，Spring onion，Bunching onion 谁给我解析下这几个词。Chive小葱，一撮一撮长一起的细小葱，超市常卖塑料盒里装的活小葱。上海蔬菜自由市场卖菜的 … · spring onion 葱；（英）大葱；生吃的小洋葱 green onion 绿洋葱；叶用葱 green chinese onion 大葱 onion造句如下： 1、There are a lot of onions in the field. 地里种着很多洋葱。 2、Onions … · 有时可数，有时不可数名词， 如果表示一根洋葱，一个洋葱头，当作一种植物看待时用可数名词。 比如,I don't really like onions odor. 作为菜吃时,不可数。 There's too much onion in this … Signs of RootKnotNematodes on Onions. Nematodes are microscopic roundworms that live in the soil, most of which do not damage plants. The rootknotnematode is not one of those roundworms. Root-knotnematodes (RKNs; Meloidogyne spp.) are obligate endoparasites that infect many crops and cause severe yield losses. In this research, we studied the effect of Welsh onion, grown as a companion plant... The effects of the root-knotnematode [ Meloidogyne incognita (Kofoid and White)] Chitwood ‘Race 3’, on ‘Utah Yellow Sweet Spanish’ onion were investigated in microplots containing a sandy loam. Inoculum levels of M. incognita ranged from 0 to 20,900 eggs and juveniles/500 cm ³ soil. Root-knotnematodes are microscopic roundworms that enter plants through the root tips and move up in the root until they find a preferred spot to feed. A few common species found in Utah include Meloidogyne hapla, Meloidogyne incognita, and Meloidogyne chitwoodi. Usually, three years of growing non-host plants (such as asparagus, corn, onions, garlic and strawberries) in a particular garden space is needed to reduce nematode populations. Fallow Period With Summer Tilling: The population of root-knotnematodes can be reduced... Recently, rootknotnematode of onion is become destructive and most prevalent where temperatures are 18 to 27°C, except for Meloidogyne hapla, which is adapted to lower temperatures. Root-knotnematode symptoms on plant roots are dramatic. As a result of nematode feeding, large galls or "knots" can form throughout the root system of infected plants. Recently root-knotnematode was observed to cause serious losses to green onion crop grown mostly in the field located near the Jamuna & Ganga river belt of Allahabad and the surrounding area in U.P. Differential host test was done to confirm the rootknot disease in onion. If nematode damage is suspected, examine plant roots for galls. The number of root galls is dependent upon the nematode population density and the species and cultivar of the host. NRKN galls are about 1/8th inch in diameter but may be larger. Onion fields infested with rootknotnematodes (RKN) were found in the Vidalia area. As can be seen in the picture (Photo: Aubrey Shirley), typical symptoms of RKN on above-ground parts of plants can involve patchy stunting, poor growth and yellowing of leaves. Root galling associated nematodes in cv. Cirrus onion plants correspond to Meloidogyne incognita, based on the morphological features of juveniles and perineal pattern of mature females, and corroborated through molecular essays. Though all root vegetables can host northern root-knotnematodes, carrots are particularly sensitive to them. However, celery, lettuce, onions and parsnips can suffer significant yield losses due to northern root-knotnematodes. Asparagus, onions, and strawberries (all varieties) are resistant to most root-knotnematode populations in Mississippi. Fallow. Fallowing is preventing any vegetation from growing, which starves the nematode population. same degree, and some will be "more okra, watermelon, cantaloupe, onion, sick" than others. Symptoms can pumpkin, squash, sweet potato, sweet. include stunting, yellowing, wilting corn, carrot, eggplant, bean and pea. during the heat of the day with recov- Root-knotnematodes... Chive,Leek,Scallion,Shallot实际都是什么品种的葱一直说法不一，各地也有差异 。
