摘要
针对我省黄壤旱耕地质地粘重、耕性不良的特点,以及发生频率较高的秋旱和秋绵雨气候特点,我们研究了免耕直播和耕翻播种两种耕种方式对秋播66—25箭舌豌豆的生长发育及土壤含水量的影响。结果表明,免耕直播方法增强了耕层土壤水分的吸持能力,促进了干旱少雨季节土壤水分强烈蒸发上升期时冬绿肥的健旺生长,单株日生长量提高了11毫克,鲜草增产118.3公斤/亩(14.6％)、种子产量增加30.2公斤/亩(45.6％)。
In consideration of a heavy clay texture and the bad tilth of yellow soil upland and the climate characteristics of frequently occured droght and Autumn drizzle in Guizhou province, we explored two sowing methods: sowing green manure directly without overturning the land and sowing after plowing the soil to study their influence on the growth of Sativus Vicia 66-25 and the soil moisture. The result shows that the first method enhanced the soil retention capability of the plowing layer and accelerated the growth of green manure during the soil moisture strong evapotranspiration period in dry season. Moreover, the daily growth rate for single plant raised by llmg, and the fresh grass output increased by 118.3kg/mu (14.6%) and the seed output by 30.2kg/mu (45.6%).
出处
《贵州农业科学》
CAS
1993年第3期33-36,共4页
Guizhou Agricultural Sciences
基金
加拿大援助的IDRC项目
关键词
绿肥
生长
发育
黄壤
土壤水分
yellow soil upland
plowing and sowing method
Sativus Vicia 66-25
soil moisture
