论文部分内容阅读
一、利用塑料小拱棚培育壮苗要使西瓜优质高产,首先必须选用适合当地风土条件和市场要求的优良品种.4月10日前后催芽播种,浇透底水.按行株距6～7厘米做穴,每穴播种一粒,覆土厚1～1.5厘米.播完及时插拱架覆塑料薄膜,四周用土压严,注意保温.幼苗出齐至真叶出现前,适当通风,防止徒长.以后
First, the use of plastic small Shed nurturing seedlings To make high quality and high yield of watermelon, we must first select the appropriate local conditions and market requirements of fine varieties. April 10 germination sowing, water through the end of water. Row spacing of 6 to 7 cm , Sowing a hole in each hole, covering soil thickness of 1 to 1.5 cm. Sowing timely insert the arch rack covered plastic film, surrounded by soil pressure strict, pay attention to heat. Seedlings Qi to true leaves appear before appropriate ventilation to prevent leggy.