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STUDENT REFLECTIONS

This experience allowed me to develop financial skills and learn to become a wise consumer. In addition, we also set up a rota sheet where we take turns to measure the plants’ height and the number of pods. Every day, two of us would go to the soybean garden, along with a ruler and a tablet, to measure the heights of the pots. If we were to do that alone, it would take more than a recess time to complete the
measurements as we would have to switch between measuring with a ruler to inputting the data onto the data sheet constantly. However, doing it in pairs saved up a lot of time since one could do the measurement while the other input the data as instructed. Through this division of labour, I learnt to appreciate the importance and beauty of teamwork in scientific investigations.

Angela

We had to sacrifice part of our lunch hours to nurture the plants and it was distressing to see some of our plants die despite our best efforts. The biggest blow came when face-to-face teaching was suspended, so we knew that all our plants would wilt soon. My main takeaway from this project is that the outcome is not the most important, but the journey.

Gloria

‘Unforgettable’ succinctly describes the CUHK Soybean Project. Although we did not bear the physical fruits of harvest, we reaped the fruits of wonder and friendship. I still remember the day when we handled rhizobia; disinfecting the table with alcohol and transferring the culture to a container. I still remember the day when we saw the shoot blooming from the soil brimming with life and vigour, and I recall the babyish leaves slowly unfurling into shades of deep green.

Harry

Not only by the fact that I am able to meet colleagues with similar interests, but I am also fascinated by the
growth and development of soybeans. Although the ultimate result might not reach our original goal, I
still believe that this is a great learning opportunity for all of us.

Howard

在參加這次種植大豆活動之前,我從未參加過任何種植植物的活動,因此在第一次種植大豆的時候也頗顯吃力。我們要先把有機泥土鋪滿每一個盆栽,之後用清水濕潤泥土,然後再把大豆的幼苗埋進泥土里,放在學校的後花園,等它逐漸成長。剛開始還沒有發現什麼問題,但過了兩三個星期之後,同學們看見有幾棵幼苗出現了一些小破洞,我們才發現原來在植物周圍的蟲子非常多,他們會吃掉幼苗的葉子,阻礙幼苗生長。

之後老師和同學們一起想辦法自製隔蟲網去阻止蟲子繼續吃掉葉子,但最後發現幼苗已經無法生長。經過這件事之後,我明白了原來種植植物也不是一件容易的事,不僅要定時灑水和灑肥料,還要細心觀察幼苗在生長期間發生的變化,從而做好應對的措施。

雖然這次種植大豆失敗了,但所謂經一事,長一智。我會吸取這次的教訓,在種植植物之前,可以先設好隔蟲網,防止壞蟲攝食幼苗的葉子,並且在種植植物的盆栽旁邊撒放一些可以驅趕壞蟲的蚊香和噴霧,以避免在下次種植的時候再有壞蟲攝食葉子的情況發生。

順德聯誼總會鄭裕彤中學
4A 王昭森

 剛開始種植大豆時,我對大豆的生長以及所需的東西認識不多,只好跟隨老師的指示去做。先把幼苗固定在木棍上,再放在有陽光底下,之後的日子,只要等土壤變乾,再澆水就可以了。

       可是在我們統測之後再去看大豆時,發現它們的葉片開始變黃,而生長得較快的大豆並沒有沿著木棍生長,更下垂了,後來大豆中的葉片更被蟲吃掉了。

       而我們最後便先用索帶固定它們的生長方向,然後剪掉被蟲蛀的葉片,再使用殺蟲劑和自製防蟲網。

       經過這次的大豆種植後,我認識到種大豆時要注意的事項,以及當大豆出現異常時的解決方法。

       總的來說,我們種植大豆時遇到的問題和解決方法:

1. 大豆慢慢由淡綠色變成黃色,可能是因為土壤中缺乏一些礦物質。可以噴施微量元素 (鋅、鈣、鐵)。

2.大豆葉片被吃成「篩子網」,可能是豆天蛾引致,可以用辛硫酸殺蟲劑噴霧處理。

順德聯誼總會鄭裕彤中學

4A 莊斐斐

從11月開始我們便體驗種植大豆。在剛開始我們就需要考慮到土壤的問題,我們知道大豆屬於不能夠重茬種植的作物,所以事先要為大豆種子提供一個新的土壤。

老師告訴我們碎土率應掌握在土壤水分不要過乾或過濕為宜,這樣大豆的種植效果比較好。所以我們在翻土時通過充分澆水以確保土壤中的營養物質達到良好的溶解吸收效果,以充足的養分供給大豆生長。

把種子放進土壤後我們了解到 若要大豆有效生長便需要充足的陽光照射以進行光合作用 ,於是我們把大豆盆栽搬移到學校後院的平地。

每天放學後,我和同學們都會到學校的後園觀察大豆生長的狀況,之後根據土壤水分的情況進行適當澆水。特別在開花後、正在結莢的時期,是最需要水的時候。所以我們每天的觀察、澆水為的是確保澆水間隔不要過長,以防植物缺水。

但是在一段時間後,我們發現大豆的葉片開始被蟲破壞,令我們發現想要大豆高產還要注意蟲害防治工作的進行。

所以我和同學們合力為大豆盆栽安裝了防蟲網以及定期噴除蟲劑使蟲害的狀況得到了改善。

參與種植後,我對大豆認知加深了,例如認識到了大豆栽培的要點是,適當的澆水管理和施肥管理。特別是在大豆芽苗生長期和結莢期,種植人員每天都要進行澆水灌溉,以免土壤中水分不足,影響大豆發育。開展大豆澆水工作時亦切忌盲目增加澆灌次數,還要兼顧單次澆水量,以免水分過多出現積水情況。另外蟲害防治尤為重要,種植人員應細心觀察和管理種植工作。

順德聯誼總會鄭裕彤中學

4A 黃卓妍

當初老師邀請我參加這次種植大豆的活動時,我對種植的了解並不深,因此想借此機會和大自然拉近關係,了解更多關於種植的知識。然而,種植遠遠比我想像中困難,除了充足的陽光、定期淋水及施肥這些因素,還有其他問題影響作物的生長,例如天氣、害蟲等。

 

在種植期間,我們因經驗不足,導致作物被害蟲侵食,所有葉子都充滿一個個破洞,於是我們便圍在一起尋找解決方法, 起初我們想到使用除蟲劑,效果來說除蟲劑無疑是最好的,但它對植物本身有著一定的影響,所以最終我們決定使用防蟲網。這次討論引發了我的反思,在幾個盆栽裏已引致這嚴重的害蟲問題,難以想像假若是在大農田裏又能否不使用除蟲劑呢?甚至會損失多少呢?而這樣農夫們的生計又會收到影響嗎?

 

後來我為了解除心中的疑問,從網上搜集有關資料,發現農夫為了不破壞生態環境,因此不會打農藥來解決害蟲問題,加上長時間噴同一種藥,害蟲也會產生一定的抗藥性,這並不是個長久之計。因此他們會採用非常生態的生物防治法,利用害蟲天敵的規律,萬物本身是相生相剋的,每種害蟲通常都會有它的天敵克制它的泛濫,例如瓢蟲和食蚜蠅。而且這樣亦能起到事半功倍的效果了,既能殺死害蟲,還能避免藥害

順德聯誼總會鄭裕彤中學

4A 龔芷妮

Event Photos

Students preparing soil for soybean planting

(Photo Credit: De La Salle Secondary School, N.T.)

Students measuring the height of the plant

(Photo Credit: De La Salle Secondary School, N.T.)

Soybean seedlings arrive!

(Photo Credit: De La Salle Secondary School, N.T.)

Students observing the growth of soybean

(Photo Credit: De La Salle Secondary School, N.T.)

Students switching containers for soybean seedlings

(Photo Credit: De La Salle Secondary School, N.T.)

It's time to enjoy the sunbath!

(Photo Credit: De La Salle Secondary School, N.T.)

Students switching containers for soybean seedlings

(Photo Credit: De La Salle Secondary School, N.T.)

Vibrant soybean plants!

(Photo Credit: De La Salle Secondary School, N.T.)

Pests found! Precautions are imminent!

(Photo Credit: Shun Tak Fraternal Association Cheng Yu Tung Secondary School)

Nets are set, soybeans are safe from pests now

(Photo Credit: Shun Tak Fraternal Association Cheng Yu Tung Secondary School)

Students measuring the growth of soybean

(Photo Credit: De La Salle Secondary School, N.T.)

Students measuring the growth of soybean

(Photo Credit: Shun Tak Fraternal Association Cheng Yu Tung Secondary School)

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