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“大叶相思”又名“耳叶相思”、“澳洲相思”,系豆科多年生常绿小乔木。据有关资料介绍,“大叶相思”在热带、南亚热带的干旱瘦瘠丘陵地和沿海地区种植,表现良好。它的鲜叶肥分高,干物含氮为2.9—3.4％,含磷0.3—0.4％,含钾为0.78—0.96％,是很好的多年生绿肥资源。 1975年我县曾引入少量“大叶相思”种子试种,但未普及推广。为了查明它的鲜叶肥效作用,我们曾进行下列压青肥效试验。 1.1981年早造,供试水稻“桂朝13”,分别每亩压“大叶相思”鲜叶1000斤、2000斤,另设对照区(不压青)。各试区面积0.03亩,3次重复。另1供试品种“科矮1号”,试区面积0.084亩,每亩压“大叶相思”鲜叶1000斤,另设对照(不压青),面积0.1亩。于插秧前半个月压青。
“Acacia aka” also known as “Acacia”, “Acacia” Department of Perennial evergreen small tree. According to relevant information, “Acacia” in the tropical and southern subtropical arid thinning hills and coastal areas planted well. Its fresh leaf fertilizer points high, dry matter nitrogen is 2.9-3.4%, phosphorus 0.3-0.4%, potassium 0.78-0.96%, is a good perennial green manure resources. In 1975, my county had introduced a small amount of “Acacia auriculosus” seed trials, but not universal promotion. In order to identify its fresh leaf fertilizer effect, we have conducted the following green pressure fertilizer effect test. 1. 1981 as early as the test for the rice “Gui Chau 13”, respectively, acre pressure “Acacia leaves” 1000 pounds, 2000 pounds, another set of control area (not pressure green). The trial area of 0.03 acres, 3 times repeated. Another test varieties “Branch dwarf 1”, the test area of 0.084 acres, acre pressure “Acacia leaves” 1000 pounds of fresh leaves, another set of contrast (not pressure green), an area of 0.1 acres. In the first half of transplanting pressure green.