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1.选种与收获我省种植蓖麻的年限短,栽培技术比较粗放,生产上很少有选种留种的习惯,种子混杂退化十分严重,影响单产提高.因此,必须提倡选种留种.1985年,喀左县老爷庙乡农业技术推广站试验,经选种的种子比不选种的(同一品种)增产12.3%,可见选种的增产效果十分明显.蓖麻是同株异花授粉作物,自然杂交率很高.同株上的分枝有早有晚,蒴果熟期和种子大小很不
1. Selection and Harvest Ricin planted in our province for a short period of time, cultivation techniques are more extensive, there is little selection of seed production habits, seed mixed degradation is very serious, affecting the yield increase. Therefore, we must promote species selection In 1985, Laoyemiao Township Agricultural Technology Extension Station in Qazu County increased the yield of selected seeds by 12.3% compared with that of the unselected ones (the same species), showing that the effect of increasing the yield of selected seeds is very obvious. Pollinated crops, high rates of natural hybrids. Branches on the same strain have early and late, capsule maturity and seed size is very small