Kusamalira udzu - kusankha bwino mankhwala ophera udzu

1. Mankhwala aliwonse ophera udzu ali ndi mtundu winawake wa udzu, ndipo mitundu ina ya udzu ikhoza kukhala yopapatiza kwambiri. Mwachitsanzo, dimethoate ndi yothandiza kwambiri polimbana ndi udzu ndi mbewu zakuthengo, koma mphamvu yolimbana ndi udzu sizikuonekera bwino, kapena ndi yoipa kwambiri.

2. Madera am'deralo ayenera kusankha mankhwala othandiza kupha udzu malinga ndi mitundu ya udzu yomwe imapezeka kwambiri m'deralo. Caokuojing, Kuomie, Hekuojing, ndi zina zotero zimagwira ntchito polimbana ndi udzu wokhala ndi masamba akulu, pomwe metsulfuron-methyl ndi chlorsulfuron-methyl (zomwe zaletsedwa pakadali pano) zimakhala ndi nthawi yayitali yotsala ndipo zimakhudza kwambiri nthaka ndi chilengedwe. Ngati udzu wokhala ndi masamba akulu (mbeu) wabzalidwa pambuyo posintha, kuwonongeka kwakukulu kwa mankhwala ophera tizilombo kudzachitika. Ngati pali udzu wambiri m'munda, kugwiritsa ntchito Caohejing, Helike, Hekejing, ndi zina zotero kumakhala ndi zotsatira zabwino.

3. Sankhani mankhwala oyenera ophera udzu malinga ndi udzu wosiyanasiyana. Malinga ndi miyezo yosiyanasiyana, udzu ukhoza kugawidwa m'magulu awiri: udzu umodzi ndi udzu umodzi, udzu wotentha.udzu wa nthakandi udzu wozizira, ndi zina zotero. Mitundu yosiyanasiyana ya udzu imakhala ndi kukana kosiyana kwa mankhwala ophera udzu. Tikudziwa kale kuti dongosolo la kukana mankhwala kwa udzu wokhwima kuyambira waukulu mpaka waung'ono ndi: Zoysia> udzu wa Bermuda> Bluegrass> Seashore paspalum> Ryegrass> Tall fescue> Bentgrass. Mwachitsanzo, kugwiritsa ntchito Grass-Kuangjing kulamulira udzu wotakata mu udzu wa Gramineae ndikotetezeka ku udzu; kugwiritsa ntchito Grass-Kuangjing kulamulira udzu wa Gramineae mu udzu wotakata ndi kotetezeka ku udzu; kugwiritsa ntchito Grass-Kuangjing kulamulira udzu wotakata mu udzu wa Gramineae ndikotetezeka, ndipo kungachotsenso udzu woopsa; Mesa-Kuang ikhoza kulamulira Cyperus rotundus.

4. Udzu umakhala ndi kukana kosiyana kwa mankhwala ophera udzu pa nthawi zosiyanasiyana zokulira.Udzu wobzalidwa m'malo enaakhoza kugwiritsa ntchito mankhwala ophera udzu akamakula komanso akamakula. Pa udzu wobzalidwa mwachindunji, mukamagwiritsa ntchito mankhwala ophera udzu musanabzalidwe, nthawi yotsala iyenera kuganiziridwa, apo ayi izi zidzakhudza kuchuluka kwa mbewu za udzu zomwe zimamera. Kugwiritsa ntchito mankhwala ophera udzu pochotsa udzu motsekedwa musanabzalidwe udzu pambuyo pobzala udzu kumafuna chitetezo champhamvu cha mankhwala ophera udzu. Pa udzu wobzalidwa mwachindunji pambuyo pa gawo la masamba 5, mankhwala ena ophera udzu ndi oyenera.

5. Kusankha mankhwala ophera udzu pa magawo osiyanasiyana a kukula kwa udzu ndikofunika kwambiri. Udzu usanakhale ndi masamba 5, kukana kwake kumakhala kofooka, mlingo wake umakhala wochepa ndipo zotsatira zake zimakhala zabwino. Pambuyo pa masamba 7, mlingo wake umawonjezeka, zotsatira zake zimachepa, ndipo chitetezo cha udzu chimachepa; panthawi yomaliza ya kukula kwa udzu, makamaka udzu ukamera mbewu, zotsatira zake zimakhala zochepa kwambiri.

6. Zinthu zina: monga kufalikira kwa mankhwala ophera udzu, momwe maluwa ena amakhudzira chilengedwe; ngati zotsalira za mankhwala ophera udzu zidzakhudza mbewu yotsatira ya zomera za m'munda; zofunikira pa kuteteza chilengedwe, ndi zina zotero. M'malo omwe anthu, makamaka ana, nthawi zambiri amasewera, monga mabwalo a gofu, mabwalo amasewera, udzu wamapaki, udzu wobiriwira, ndi zina zotero, mankhwala ophera udzu ochepa ayenera kugwiritsidwa ntchito, ndipo kuchuluka kwa mankhwala ophera udzu kuyenera kukhala kochepa momwe kungathekere.