我连自一九六三年起,逐年大面积定植桑园,发展养蚕事业。桑树栽植行距5.5—6.0米,其长成约需3—7年。为了充分合理利用土地,增加收益,自定植当年起,就实行桑棉间作。 于桑树行间,用改装的24行条播机播棉花6行,带宽3.6米。因为两旁尚有2.4—3.0米的空隙,通风透光条件好,所以棉株病虫害少,蕾铃脱落少,单铃重增加。但由于棉株密 Since 1963, I have planted a large area of ​​mulberry fields year by year to develop sericulture. Mulberry planting 5.5-6.0 m spacing, which grows about 3 to 7 years. In order to fully and reasonably utilize the land and increase the income, the mulberry intercropping will be carried out since the year of planting. Between the mulberry trees, with a modified 24-line broadcast machine sow cotton 6 lines, a bandwidth of 3.6 meters. Because there are 2.4-3.0 meters on both sides of the gap, good ventilation and light conditions, so less cotton plant diseases and insect pests, buds shed less, single boll weight increase. However, due to cotton plant density