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我县东临黄海,沿海稻区多属新垦潮淤土。1980年以前,水稻育秧是采取春季耕翻后,灌淡水洗盐3—4次,然后整地湿润育秧,由于盐碱重,很难立苗,成秧率仅有35—40%,秧苗瘦弱。浪费了大量淡水和劳力,又因秧质差,苗不足,贻误农时,产量低而不稳。为了解决这个问题,经过反复试验和总结经验教训,自1980年以来,在盐碱地育秧方法上采取:打暗洞洗盐、冬耕、春耙、旱落谷,小苗三叶期以后,采用墒水管的半旱育秧方法,把秧田土壤的全盐压低在0.3%以下,从而,在春季少雨,和淡水源不足的情况下,仍培育出70%以上带分蘖秧苗。成秧率达77.3%,育秧工本降低了27.3%。现将技术措施介绍如下:
My county east of the Yellow Sea, coastal rice area are mostly newly reclaimed tidal silt. Before 1980, rice seedling is plowed after spring tillage, irrigated with fresh water 3-4 times, and then soil preparation wet seedlings, due to saline-alkali, it is difficult to stand seedlings, planting rate of only 35-40%, thin seedlings. Wasting a lot of fresh water and labor, but also because of poor quality of seedlings, lack of seedlings, delaying farming, the output is low and unstable. In order to solve this problem, after repeated experiments and lessons learned, since 1980, the method of raising seedlings in saline-alkali land has taken the following steps: dark salt washing salt ponds, winter tillage, spring raking, drought and valleys, Of the semi-arid seedling method, the total salt stress of the seedling soil is below 0.3%, so more than 70% of the seedlings with tillering are still bred in the spring when the rainfall is low and the fresh water source is insufficient. Seedling rate of 77.3%, seedling reduction of 27.3%. The technical measures are as follows: