Isivuno serayisi zerayisi sinobudlelwano obukhulu nokomisa kwalo kanye nomswakama. Ngokuvamile, isivuno serayisi singaba ngu-70%. Kodwa-ke, ngenxa yezinhlobonhlobo nezinye izici zihlukile, isivuno esithile serayisi kufanele sinqunywe ngokusho kwesimo sangempela. Izinga lokukhiqizwa kwelayisi ngokuvamile lisetshenziselwa ukuhlola ikhwalithi yerayisi njengenkomba ebalulekile, ikakhulukazi okuhlanganisa isilinganiso esibi kanye nezinga lerayisi eligayiwe.
Izinga eliqinile libhekisela kumaphesenti esisindo serayisi elingapholishiwe esisindweni serayisi, esisukela ku-72 kuya ku-82%. Ingakwazi ukugoqwa ngomshini wokugoqa noma ngesandla, bese isisindo serayisi elingapholishiwe singalinganiswa futhi izinga elibi lingabalwa.
Izinga lerayisi eligayiwe ngokuvamile libhekiselwa esisindweni serayisi eligayiwe njengephesenti lesisindo serayisi, futhi ububanzi balo ngokuvamile bungama-65-74%. Ingabalwa ngokugaya irayisi elinsundu ukuze kukhishwe ungqimba lwe-bran ngomshini werayisi ogayiwe kanye nesisindo serayisi eligayiwe.
Izinto ezithinta isivuno serayisi zimi kanje:
1) Ukusebenzisa umanyolo ngendlela engafanele
Ngemuva kokukhetha umanyolo ongafanele ukukhula kwerayisi kanye nokusebenzisa umanyolo omningi we-nitrogen esigabeni sokulima kanye nesigaba sokuvuthwa, kulula ukubambezela ukusebenza kahle komanyolo wokugaya futhi kubambezeleke ukugaywa kwerayisi, kodwa lapho umphumela womanyolo ubonakala esigabeni sokuhlanganisa, kulula ukuvela indawo yokuhlala, futhi kuthinte isivuno, ngaleyo ndlela kuthinte isivuno selayisi.
(2) Ukuvela kwezifo nezinambuzane
Ngesikhathi sokukhula kwerayisi, ezinye izifo nezinambuzane, njengokuqhunyiswa kwerayisi, i-sheath blight, ama-rice borer nezinye izinhlobo, zivame ukwenzeka. Uma zingalawulwa ngesikhathi, isivuno serayisi kanye nezinga lesivuno serayisi kuzothinteka kalula.
(3) Ukuphatha kabi
Esikhathini sokulima, uma izinga lokushisa lehla, ukukhanya kuba buthakathaka futhi izindlela ezifanele azimukelwa ngesikhathi sokuxazulula isimo, kulula ukwandisa okusanhlamvu okungenalutho, futhi isivuno nerayisi isivuno nakho kuthinteka.
Isikhathi sokuthumela: Feb-16-2023