行政院農業委員會台南區農業改良場  研究彙報第13號

機械插秧箱式土壤育苗試驗

李文輝

摘  要

本報告包括三個小實驗,於民國61年第1期作在嘉義分場舉行,試驗一係利用9種不同種類之土壤所進行之育苗試驗,試驗結果顯示育苗土壤以微酸性壤土為最佳,土壤PH值過高容易發生苗立枯病。試驗二係利用立枯靈1000倍液等5種不同藥劑在播種後覆土前利用噴霧器噴洒於稻種上及箱土內,以防治苗立枯病之發生,試驗結果發現立枯靈1000倍液對苗立枯病之防治效果最佳,其次尚有烏斯普龍1000倍液亦表現甚佳,福祿馬林100倍液對發芽有抑制現象,好速殺600倍液對苗立枯病之防治無效。試驗三係在育苗期間利用4種不同之灌水方式進行田灌水管理試驗,試驗結果顯示澆水方式常因水分不足,一期作低溫時容易發生苗立枯病,二期作高溫下容易發生缺水枯死,最佳之灌水方式是將箱式秧苗排置於秧床上,利用傍晚灌水早上排水,不僅秧苗生育健旺,而且可以預防枯病之發生。


The research on the nursing of rice seedling in the soil-bed for transplanter

W. H. Lee

Summary

The purpose of this study is to deal with the experiments related to the techniques of raising rice seedlings in the boxes for the use of rice transplanter.  These experiments covered in this paper were:  (1) the evaluation of the possibility of different kinds of soil used as the material for seed-bed. (2) The screening test on the chemicals for controlling the disease of rice seedling rot (Fusarium wilt). (3) The comparison of water managements in nursery stage.  The experimental results are summarized as follows:

1. For nursing rice seedling the loam soil that has 5 to 6 pH value is the best.  The higher the pH value of soil, the easier the occurrence of seedling rot, when temperature was low and water supply was not enough.

2. The most effective control of the seedling rot was to use the 1000 times diluted solution of Taehigalan, sprayed on the seeds and soil after seeding and before top soil was covered.

3. The optimum amount of seeds per box for Kuboda-transplanter was from 250 gram to 300 gram and for Yama-transplanter from 170 gram to 180 gram.

4. The required fertilizer per box was 8 gram-8gram-4gram for ammontuml sulphate, calcium super-phosphate and potassium chloride respectively.

According to these results, a preliminary technique of nursing seedling by soil-bed in box was established.



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