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關注：1
2013-05-23 12:21
求翻譯：自有人類栽培農作物歷史以來，植物病、蟲、草害無時無刻不制約著農產品的產量和品質，而品種抗病性的喪失、有害生物抗藥性的產生、有害生物演替規律難以預料， 以及病蟲防治要求作物遺傳多樣化和生產栽培、商貿加 要求的品種單一化的矛盾等技術問題一直未能解決，同時1部分已被控制的有害生物在放松防治或環境條件改變后又會回升，如大豆灰斑病從20世紀60,-~90年代的4次大流行，60年代火面積發生的小麥腥黑穗病是什么意思？ 待解決
 懸賞分：1
- 離問題結束還有
自有人類栽培農作物歷史以來，植物病、蟲、草害無時無刻不制約著農產品的產量和品質，而品種抗病性的喪失、有害生物抗藥性的產生、有害生物演替規律難以預料， 以及病蟲防治要求作物遺傳多樣化和生產栽培、商貿加 要求的品種單一化的矛盾等技術問題一直未能解決，同時1部分已被控制的有害生物在放松防治或環境條件改變后又會回升，如大豆灰斑病從20世紀60,-~90年代的4次大流行，60年代火面積發生的小麥腥黑穗病
問題補充： |
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2013-05-23 12:21:38
Has its own history of human cultivation of crops, plant diseases, insects and weeds all the time does not restrict the yield and quality of agricultural products, and the loss of disease resistance varieties, pest resistance to produce, difficult to predict pest succession laws, as well as disease
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2013-05-23 12:23:18
正在翻譯，請等待...
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2013-05-23 12:24:58
Since the innate humanity has cultivated the crops history, the plant disease, the insect, the grass harm are constantly not restricting the agricultural product output and the quality, but the variety disease resistance loses, the harmful biological antibiotic production, the harmful biological suc
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2013-05-23 12:26:38
Owned human cultivation crop history yilai, plant disease, and insect, and grass damage all does not restricting with agricultural products of yield and quality, and varieties disease resistance sexual of lost, and harmful biological resistance of produced, and harmful biological speech for the law
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2013-05-23 12:28:18
Has its own history of human cultivation of crops, plant diseases, insects and weeds all the time does not restrict the yield and quality of agricultural products, and the loss of disease resistance varieties, pest resistance to produce, difficult to predict pest succession laws, as well as disease
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