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1.选用高质量的株系种子稀播繁殖的种子要求成熟度高、子粒饱满、生活力强、发芽率达到90%,纯度在99.8%以上,净度达到98%,这样的种子播种后出苗整齐,幼苗健壮。为此,播种前必须对株系种子进行清选,以提高清洁率,并进行种子晾晒,提高出苗率和田间保苗率,确保增产。 2.精细整地小麦稀播基本苗数少,要争取一播全苗,就必须提高整地质量。整地应以深耕、保墒为重点,提高土壤蓄水保肥能力。要机耕机耙,机耕要求耕深25厘米以上,消灭地墒沟,要精细整地,达到上虚下实无坷垃,地面平整无坑洼。还要平整打畦,使繁殖种子园田化,旱涝保收。总的要求达到早、深、净、细、实、平。
1. Selection of high-quality seeds of seed propagation planted seeds require high maturity, full grain, strong vitality, germination rate of 90%, purity of 99.8% or more, clarity of 98%, such seeds after seedling emergence Tidy, robust seedlings. To this end, the sowing of seeds must be cleared before sowing, in order to improve the cleaning rate, and drying the seeds, raising the emergence rate and seedling protection rate in the field, to ensure yield. 2. Fine preparation of wheat thinning land leveling seedlings less, to fight a full seedlings, it is necessary to improve the quality of land preparation. Soil preparation should be deep plowing, soil moisture as the key point, improve soil water retention fertilizer capability. To tillage machine harrow, tillage requires deep plowing 25 cm or more, to eliminate the ditch, to fine preparation, to achieve nothing under the rub, the ground is flat without potholes. But also smooth play, so that breeding seed garden, drought and salvo Paul received. The general requirements to reach early, deep, net, fine, real, flat.