He aha kāu e ʻike ai e pili ana i nā kumu nui o ka ulu ʻana i nā pua Sun?

ʻO Sunflower kahi genus o ka sunflower i ka ʻohana Asteraceae, alias: pua lā, pua lā, pua lā, pua pua, pua pua.Ua ʻai ka hapa nui o ka poʻe i nā hua sunflower , i ulu ʻia e ka sunflower, pehea kāu ʻike e pili ana i nā kumu nui o ka ulu ʻana i nā sunflowers?ʻO ka mea aʻe e hoʻolauna ka mea hoʻolako hua sunflower i nā kumu nui o ka ulu ʻana i nā sunflowers.

ʻO nā sunflowers no ʻAmelika Hema, mālama ʻia e ka poʻe Sepania i ka makahiki 1510 mai ʻAmelika ʻĀkau a i ʻEulopa, no ka hoʻohana ʻana i nā mea nani.19 kenekulia, a ua hoʻolauna ʻia i ʻAmelika ʻĀkau mai Rusia.Ua mahi ia ma Kina.Kapa ʻia nā ʻanoʻano o ka sunflower a ʻai pinepine ʻia a ʻai ʻia ma ke ʻano he ʻai ʻai, he mea ʻono.

1. He aha ke ʻano o ka lepo e ulu ai nā sunflowers?

Ma nā wahi he nui, ulu ka sunflower ma ka paʻakai, ke one a me ka lepo maloʻo, no ka mea he kūpaʻa loa a ʻoi aku ka maikaʻi ma mua o nā mea kanu ʻē aʻe.ʻOiai ʻaʻohe koi lepo koʻikoʻi ka sunflower, hiki ke ulu ma nā ʻano lepo āpau, mai ka lepo momona a maloʻo, infertile a me ka ʻāina paʻakai.Eia nō naʻe, ʻoi aku ka nui o ka hiki ke hoʻonui i nā hua ke kanu ʻia i loko o nā māla me kahi papa hohonu, ka nui o ka humus kiʻekiʻe, ka hoʻolālā maikaʻi a me ka paʻa ʻana o ka wai a me ka momona.Hiki ke loaʻa nā hua maikaʻi aʻe a me nā pono waiwai kiʻekiʻe.

2. He aha ka dormancy o nā hua sunflower?

I ka hihia o nā hua sunflower aila, ʻo ka dormancy maʻamau he 20 a 50 mau lā ma hope o ka ʻohi ʻana.He mea koʻikoʻi ka dormancy no ka mea hiki i nā hua ke 'moe' a hiki i ke kau lūlū maʻamau.Hiki ke ʻalo ʻia ka hoʻoulu ʻana ma ka diski i ka wā o ka ʻohi ʻana i ka hua, ʻoiai inā ua mau ka ua.E hala maʻamau kēia dormancy ma hope o ka ʻohi ʻana o kēia makahiki a me ke kau lūlū e hiki mai ana.I nā hihia kūikawā kahi i hoʻohana ʻia ai nā hua hou no ka lūlū ʻana a i ʻole ka hana noiʻi, hiki ke haki ʻia ka dormancy me ka lima.ʻO ka maʻamau, hoʻomoʻi ʻia nā hua i loko o kahi hopena o 50 a 100 micrograms/ml o ka ethylene glycol no 2 a 4 mau hola a laila germinated ma lalo o nā kūlana kūpono.He mea pono nō hoʻi ʻo Gibberellin no ka wāwahi ʻana i ka dormancy i nā hua sunflower oilseed.

3. He aha nā kūlana climatic i kūpono no ka mahi ʻana i ka sunflower?

ʻO ka Sunflower kahi mea kanu aloha wela a me kahi mea kanu hoʻomanawanui me ka hoʻololi maikaʻi ʻana i nā kūlana climatic.Ke piʻi ka mahana o ka lepo ma ka papa lepo (0-20 cm) i 2 ° C, hoʻomaka nā hua e ulu, 4-6 ° C hiki ke ulu a hiki ke hoʻohana ʻia ka 8-10 ° C no ka ulu ʻana o nā mea kanu.Eia kekahi, pili pili loa ka puka ʻana o ka hua me ka maikaʻi o ka hua, ka wai, ka oxygen a me ke ʻano a me ke ʻano o ka lepo.

ʻO ka ʻaila hinu nui mai ka seedling a hiki i ke oʻo ʻana e pono ai ≥ 5 ℃ pono kumulative wela o kahi o 1700 ℃;ʻO ka sunflower hiki ke ʻai ʻia mai ka seedling a hiki i ke oʻo ʻana e pono ai ≥ 5 ℃ pono kumulative wela ma kahi o 1900 ℃.