论文部分内容阅读
1985～1987年,在重庆市北碚对来自全国各生态区的90个大麦入志农家品种,进行春、秋播种,以研究各生态型大麦,在不同生态条件下的生长发育特点,及其对光温等生态因子的反应。试验结果如下:1.各生态型品种在2年4个播期差异极大的生态条件下,能突出表现出不同生态型的光温反应特点,按光温反应特性,初步对供试品种进行了分类。2.不同类型品种光温反应的差异,主要在出苗—拔节。拔节—抽穗各类型间对温度等生态因子反应方向一致,但差异极大。认为除了春化要求、短日敏感性外,应将温度对生长促进作用的差异,也作为确定大麦早熟性的生理因素。3.认为三联期是大麦光温反应的转折点及进行生殖生长的标志。为研究我国栽培大麦在不同生态条件的生长发育特点及其对光温等生态因子的反应,科学地划分我国大麦生态型及其分布,1983～1985年全国开展大麦生态区划试验,由各省提供代表性入志农家品种3～5个,共90个。1985～1987年在重庆市北碚播种,为了更好地了解不同类型品种对光温等生态因子的反应,我们在当地适宜播期10月末11月初外,增设了春季播种(3月初)。除按统一要求观察生育期、生长习性、考种外,增加记载了拔节期,1986～ 1987年还观察了生长锥的发育情况。本文着重总结全国各生态区品种在重庆地区2年4个播期,差异极大的生态因子影响下生长发育的特点。2年试验地均设于北碚西南农业大学农场,海拔200米,29°49′N,106°25′E,试验地为紫色壤土,肥力中等,按生产水平施基肥,间苗及中耕各一次,苗期、齐穗期喷药防虫。
From 1985 to 1987, 90 barley cultivars from Shijiazhuang were planted in spring and autumn in Beibei of Chongqing to study the growth and development of different ecotypes of barley in different ecological conditions. Light temperature and other ecological factors response. The results are as follows: 1. The ecological characteristics of different ecotypes under different ecotopes of 4 sowing times in 2 years can be highlighted by the ecotypes. According to the light and temperature response characteristics, The classification. 2. Different types of varieties of light and light response differences, mainly in the emergence - jointing. The different types of jointing-heading methods had the same direction of temperature and other ecological factors but had great differences. That in addition to vernalization requirements, short-term sensitivity, should be the difference between the role of temperature on the promotion of growth, but also as a pre-maturity to determine the physiological factors of barley. 3. It is considered that the triple phase is the turning point of photothermal reaction of barley and the marker of reproductive growth. In order to study the growth and development characteristics of cultivated barley in different ecological conditions and its response to ecological factors such as light and temperature, the ecological type and distribution of barley in China were scientifically divided into two parts. From 1983 to 1985, Sex into the farm varieties 3 to 5, a total of 90. From 1985 to 1987, we planted Beibei in Chongqing. In order to better understand the response of different types of plants to light and temperature and other ecological factors, we planted the spring sowing (early March) outside the local suitable sowing period from late October to early November. In addition to the unified requirements of observing the growth period, growth habit, test species, an increase of recorded jointing stage, from 1986 to 1987 also observed the growth cone growth. This article summarizes the characteristics of growth and development under the influence of ecological factors with different sowing times in four ecotopes of different ecological regions in Chongqing in 2 years. 2 years of experimental sites are located Beibei Southwest Agricultural University farm, 200 meters above sea level, 29 ° 49’N, 106 ° 25’E, the test for purple loam soil, medium fertility, according to the production level of base fertilizer, Seedling, heading Spray pest control.