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黑龙港地区玉米主要害虫有:地下害虫、玉米螟、蚜虫、棉铃虫、蓟马、叶螨等。对玉米造成很大危胁,防治不利,就会造成严重减产和品质下降。其综合防治措施是: 一、越冬期 1、合理布局、轮作倒茬。玉米连作不仅地力损耗大,而且虫害严重。因此,应统筹安排,最好与双子叶作物轮作,既可充分利用不同土层的养分,又可减轻害虫为害。 2、选用抗虫品种。玉米品种不同,对玉米螟、棉铃虫、蚜虫、蓟马等的抗性有较大差异,因此,应选用适于我区生长的高产、优质、抗虫的品种。 3、及时处理玉米秆。秸秆是玉米螟和多种害虫的越冬场所。冬季可作燃料,饲料或其他用途,于4
The main pests of corn in Heilongjiang area are: underground pests, corn borer, aphids, cotton bollworm, thrips, spider mites and so on. Causing a great threat to maize and preventing and controlling unfavorable ones, it will cause serious decrease of production and decline in quality. The comprehensive prevention and treatment measures are: First, the winter 1, a reasonable layout, crop rotation. Continuous cropping is not only loss of maize, but also serious pests. Therefore, co-ordination arrangements should be made, preferably with crop rotation of dicotyledons, so as to make full use of the nutrients of different soil layers and reduce pest infestations. 2, use insect-resistant varieties. Maize varieties of different, corn borer, cotton bollworm, aphids, thrips and other resistance are quite different, therefore, should be suitable for the growth of our region of high yield, quality, insect-resistant varieties. 3, timely processing of corn stalks. Straw is a borer for corn borer and various pests. Winter can be used as fuel, feed or other purposes, at 4