Mea ʻike hiki ke wai lepo

He mea nui loa ka nānā mau ʻana i ka "pilikia wai" o nā mea kanu ma nā wahi maloʻo a ua hoʻokō mau ʻia ma ke ana ʻana i ka makū o ka lepo a i ʻole ka hoʻomohala ʻana i nā hiʻohiʻona evapotranspiration e helu ai i ka huina o ka mahu ʻana o ka ʻili a me ka transpiration o nā mea kanu. Akā aia ka hiki ke hoʻomaikaʻi i ka pono o ka wai ma o ka ʻenehana hou e ʻike pono ai i ka wā e pono ai nā mea kanu i ka hoʻoinu ʻana.

Ua koho hewa nā kānaka noiʻi i ʻeono lau i hōʻike pololei ʻia i ke kumu mālamalama a hoʻokomo i nā mea ʻike lau ma luna o lākou, e pale ana i nā aa nui a me nā kihi. Ua hoʻopaʻa lākou i nā ana i kēlā me kēia ʻelima mau minuke.

Hiki i kēia noiʻi ke alakaʻi i ka hoʻomohala ʻana i kahi ʻōnaehana kahi e hoʻouna ai nā mea ʻike ʻūlū lau i ka ʻike kikoʻī o ka wai o nā mea kanu i kahi ʻāpana kikowaena ma ke kula, a laila e kamaʻilio pū ana i ka manawa maoli me kahi ʻōnaehana irrigation e hoʻoinu i nā mea kanu.

Ua liʻiliʻi nā loli o kēlā me kēia lā i ka mānoanoa o ka lau a ʻaʻohe loli koʻikoʻi i ʻike ʻia i kēlā me kēia lā i ka neʻe ʻana o ka makū o ka lepo mai ke kiʻekiʻe a i ka pae mae. Eia nō naʻe, i ka wā i emi ai ka makū o ka lepo ma lalo o ke kiko mae, ua ʻike nui ʻia ka loli o ka mānoanoa o ka lau a hiki i ka paʻa ʻana o ka mānoanoa o ka lau i nā lā ʻelua hope loa o ka hoʻokolohua i ka wā i hiki ai ka nui o ka makū i 5%.  ʻO ka capacitance, ka mea e ana i ka hiki o ka lau ke mālama i ka hoʻouku ʻana, e mau ana ma kahi liʻiliʻi loa i nā wā pōʻeleʻele a piʻi koke i nā wā mālamalama. ʻO ke ʻano kēia, he hōʻike ka hiki ke hana i ka photosynthesis. Ke emi ka makū o ka lepo ma lalo o ka wilting point, e emi ana ka loli o ka hiki i ke ao a pau loa i ka wā e hāʻule ai ka makū o ka lepo ma lalo o 11%, e hōʻike ana ua ʻike ʻia ka hopena o ke kaumaha wai ma ka hiki ma o kona hopena ma ka photosynthesis.

"Ua like ka mānoanoa o ka pepa me ka pōpō—hoʻonui ia ma muli o ka hydration a me nā ʻaelike ma muli o ke kaumaha wai a i ʻole ka dehydration,"I ka ʻōlelo maʻalahi, loli ka nui o ka lau me nā loli o ke kūlana wai o ka mea kanu a me ka mālamalama ambient. No laila, hiki i ka nānā ʻana i ka mānoanoa o ka lau a me nā loli o ka nui ke hōʻike i ke kūlana o ka wai i loko o ka mea kanu - kahi luawai kaomi. »