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小麦是宁夏引黄灌区的主要夏粮作物,也是我场的主要夏粮作物,夺取小麦高产,对完成全年粮食生产任务有着重要意义。影响小麦高产的因素很多,其中麦田杂草的危害也是主要因素之一。为了进一步夺取小麦大面积高产,我们对危害小麦的黎科杂草作了一些调查研究,现将初步结果分述于后,供参考。一、黎科杂草对小麦产量的影响据初步调查,我场现有麦田杂草24种,分属于10个科,其中黎科就有9种(包括小种)。黎科杂草中,黎和小黎在我场麦田危害较严重,一般能使小麦减产10～20％,杂草严重的田块小麦减产达50％以上。由于这两种杂草的大量滋生,争夺了小麦的肥料,不仅造成
Wheat is the main summer cereal crop in irrigated area of Yellow River in Ningxia and also the main summer cereal crop in our field. It is of great significance to complete the annual grain production task to seize the high yield of wheat. There are many factors that affect the high yield of wheat, among which the harm of wheat weeds is also one of the main factors. In order to further seize large areas of high-yield wheat, we conducted a number of studies on the weed richer weeds, wheat, now the preliminary results are described below, for reference. First, the impact of Richen weeds on wheat production According to a preliminary survey, I field there are 24 kinds of weeds in the field, belonging to 10 families, including Ricacus there are 9 species (including races). Among the weeds in Richen, Li and Xiaoli are more endangered in the field of wheat in our field. Generally, the yield of wheat can be reduced by 10-20%. The yield of wheat with weeds is more than 50%. Due to the massive breeding of these two weeds, contention for wheat fertilizers is not only caused