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由于水田系统是一个较为特殊的农业生态系统,因此不能像早地那样有许多可以选择的作物用于多样性种植。但水稻作为人类栽培历史悠久的作物,形成了许多各具特色的品种,利用不同特性的品种进行多样性栽培,同样可以达到抗病丰产的效果。对于一些抗病性较差的优质稻,多样性栽培的增收效益更加显著。要实现抗病增效,需掌握以下几个要点。一、品种搭配原则1.品种遗传差异。RGA相似遗传距离小于0.75。2.品种表型差异。株高差异小于30厘米左右,品种成熟差异期小于10天。
Since paddy field system is a relatively special agro-ecosystem, there are many alternative crops that can not be used for diversity cultivation as early as possible. However, rice, as a long-standing crop cultivated by human beings, has formed many varieties with different characteristics. Using different varieties of cultivars for variety cultivation can also achieve the effect of high disease-resistant yield. For some high-quality rice with poor disease resistance, the diversified cultivation has more significant income-increasing benefits. To achieve disease and increase efficiency, we must grasp the following points. First, the principle of varieties with a variety of genetic differences. RGA similar genetic distance less than 0.75.2. Plant height difference is less than 30 centimeters, breed maturity difference of less than 10 days.