求翻译：二是作物种类单一，传毒媒介少，茄科作物少，主要作物是玉米，而玉米的害虫不传播木薯病毒。因此，整个生态环境是自然界赐于汤加王国得天独厚的木薯种植繁育基地。建立了木薯种植繁育基地，掌握了更先进的木薯栽培繁育技术，积累了很多种植木薯的经验，为木薯产业化的形成和产业链的延伸打下了坚实基础。是什么意思？

Single crop species transmit the virus medium and Solanaceae crops, the main crop is corn, corn pests spread of cassava virus. Therefore, the whole ecological environment is the nature thanks to a unique cassava breeding base in the Kingdom of Tonga. Cassava breeding base, to master the more advance

2 is a single type of crop, the drugs, as well as the media less crop less, with the main crops are corn, but corn pests are not propagated cassava virus. Therefore, the entire ecosystem is a natural gift of the Blessed Kingdom of Tonga to cassava cultivation and breeding base. cassava cultivation h

Two is the crops type is unitary, passes on the poisonous medium to be few, the solanaceae crops are few, the main crops are the corn, but corn's harmful insect does not disseminate the cassava virus.Therefore, the entire ecological environment is the nature bestows in the Kingdom of Tonga advantage

Second crop type single, transmission by vectors less, fewer crops of Solanaceae, main crops are maize, maize pests of cassava virus does not propagate. The entire ecology environment nature gives to the abundant cassava plant breeding Center in the Kingdom of Tonga. Foundation of the cassava plant

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